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The 8 Best automotive diagnostic timing lights of 2024

Are you trying to find automotive diagnostic timing lights among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling automotive diagnostic timing lights on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 29 hours of research and did 47 automotive diagnostic timing lights tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best automotive diagnostic timing lights you can buy today

No. 1
Performance Tool W80587 Digital Timing Light, LED Display 12V Automotive Ignition Timing Light for 9V-16V Ignition System Strobe Lamp Detector, Portable Timing Check
  • Display engine speed up to 9, 000 RPM, and ignition spark advance from 0-90
  • Professional set initial and advance timing to obtain total timing and peak performance
  • Super bright Xenon flash, and a high vis LED display
  • Designed for precise tuning and diagnostic work. Tough ABS shell, 60 in. Inductive Pickup leads and works with 12 volt systems
SaleNo. 2
Engine Timing Light with Spark Plug Tester,Inductive Timing Light Gun Timing Light Ignition Testers Engine Ignition Coil Tester for Car Motor Motorbike Vehicle Motorcycle Marine Lawnmower
  • ★ Timing Light Will Extend The Life of Engine ★- It doesn't exactly inspire confidence when you're feel a sudden succession of shudders or thumps emanating from your car engine.Knocking,could be sign of something dire.or could just mean the engine's timing is a little off.You could spend dollars to repair place.Or you could diagnose problem on your own using a timing light.Properly adjusted timing, in turn,helps to make sure your engine works at peak power and efficiency.Who doesn't want that?
  • ★ Never Have To Worry About Running Out of Power★ -The cool thing about timing lights is that unlike a flashlight, you never have to worry about running out of power the light. That is, as long as your car runs and is connected to a working 12-volt battery. With the engine off, you merely clamp the timing light's red wire to the battery's positive terminal, then the black wire to the battery's negative terminal. Lastly, you take the signal wire and clamp directly to Number 1 spark plug wire.
  • ★ Ergonomic Pistol Grip Design ★ - First, you should know that timing lights come in a few different shapes and sizes.But most people would probably prefer the much cooler, ray gun-shaped, "pistol grip" variety.Because they're more ergonomic inside the close confines of a car's engine bay (yeah, that's it). Handle pistol-type design conforms to the engineering design, the button is comfortable, feels good, facilitates the operation.
  • ★ Extended Length Cables Easy Connect To Car's Engine Bay★ - Sensor Clips Cable length up to 4.54 ft .Never worry about the length of the cable is not long enough.Adapts to all kinds of 12V battery for automobiles, motorcycles, ATVs, personal watercraft, RVs, boats, airplanes, golf carts, lawn mower, etc .
  • ★ Engine Ignition Spark Tester As Bonus ★- Use this ignition spark tester to check the condition of the ignition system at each cylinder without going to expensive mechanics.The spark tester connects between the spark plug and spark plug wire in seconds to troubleshoot dirty spark plug connections, defective points and bad cables or connections.
No. 3
REVIAM Car 12v Timing Light Diagnostic Tester Inductive Strobe Lamp Light Petrol Engine Ignition Detector for Motorcycles Motor Vehicle Boat Mot
  • ☀ [Induction Timing Light]: engine ignition timing is mainly used to check and adjust the ignition timing of two-stroke or four-stroke automobile, agricultural and marine engines. A focusing lens wrapped in soft rubber provides focused light.
  • ☀ [Reverse Polarity Protection]: Xenon Ignition Timing Light equipped with red and black sensor clips to distinguish polarity. Inductive pickups clip on for easy connection.
  • ☀ [4-button design]: Inductive Timing Detector with 4-stroke and two-stroke can be switched, the speed and ignition advance angle are displayed, and the ignition advance angle can be easily increased or decreased. It can easily run on a 12V ignition system.
  • ☀ [Digital display]: Petrol Engine Ignition Timing with digital display button operation panel, which can display the ignition advance angle or engine speed, allowing you to easily diagnose and make precise adjustments.
  • ☀ [ABS Housing] : engine timing Diagnostic Tester has an impact-resistant, wear-resistant ABS housing and can provide good electrical performance.
No. 4
REVIAM Timing Light Cars Engine Timing Light LED Digital Diagnostic Tester Inductive Timing Light Detector for Motorcycles Motor Vehicle Boat Mot
  • ☀ [Induction Timing Light]: engine ignition timing is mainly used to check and adjust the ignition timing of two-stroke or four-stroke automobile, agricultural and marine engines. A focusing lens wrapped in soft rubber provides focused light.
  • ☀ [Reverse Polarity Protection]: Xenon Ignition Timing Light equipped with red and black sensor clips to distinguish polarity. Inductive pickups clip on for easy connection.
  • ☀ [4-button design]: Inductive Timing Detector with 4-stroke and two-stroke can be switched, the speed and ignition advance angle are displayed, and the ignition advance angle can be easily increased or decreased. It can easily run on a 12V ignition system.
  • ☀ [Digital display]: Petrol Engine Ignition Timing with digital display button operation panel, which can display the ignition advance angle or engine speed, allowing you to easily diagnose and make precise adjustments.
  • ☀ [ABS Housing] : engine timing Diagnostic Tester has an impact-resistant, wear-resistant ABS housing and can provide good electrical performance.
SaleNo. 5
How to Diagnose and Repair Automotive Electrical Systems (Motorbooks Workshop)
  • Martin, Tracy (Author)
  • English (Publication Language)
  • 160 Pages - 11/10/2005 (Publication Date) - Motorbooks (Publisher)
SaleNo. 6
Innova 5568 Pro Digital Timing Light with Storage Case
  • Four function digital readout: Tachometer; Advance; Dwell; and Voltage.Fit Type: Universal Fit
  • Patented Skip Circuitry Test up to 9,990 RPM
  • Heavy-duty shock proof housing features a molded boot for extra protection against the fan blades
  • Detachable 6-foot leads with inductive pickup
  • Able to use with one-hand operation including a molded plastic storage case
SaleNo. 7
OBDMONSTER Pro Ignition Timing Light, 12V Engine Timing Light Strobe Lamp Inductive Petrol Engine Timing Gun with Strong Flash Strobe Automotive Tool for Car Motorcycle Marine
  • Engine Timing Gun: Can re-timing your car's ignition to get the best performance. Suitable for automobiles, motorcycles, ATVs, RVs, boats and all two-stroke or four-stroke gasoline engines. It works on 12V ignition systems. Its speed is up to 1000rpm.
  • Advance Function: The timing light gun can capable of testing the ignition timing scale on the engine flywheel or belt pulley intuitively to adjust appropriately.Able to detect the automotive knock suppression control system and vacuum advance angle control system, change its advance angle with the speed change.
  • Brightness Enhancement-ed 58% & Wire Thickened 25% & Integrated Line Machine Design: Pro Ignition timing light brightness enhancement-ed 58%, so it can work great even in daylight. Wire thickened 25% and added integrated line machine to make it can lasting long time.
  • Sensor Clips & Ergonomic Handle: The spark plug sensor clip is a sliding clip design for easy and safe hookup of the high voltage line of the No.1 cylinder. The handle pistol-type design of Ignition timing light is ergonomically and comfortable press keys, feels good, facilitates the operation.
  • Attention: The power supply is 12V with red connecting to positive and black to negative. The high voltage wire induction clamp is clamped on the high voltage line of cylinder with the arrow on the induction clamp pointing to the direction of the spark plug for normal working.
  • Costumes Service:100% No question asked return. We offer 24 months warranty and if you have any question about the timing light gun, please send message to us via Amazon. Our professional technical team will help to you solve the problems within 24 hours.
No. 8
AUTOOL Timing Light Automotive Ignition Timing Light 12V, Engine Timing Gun with Flashlight, Ignition Timing Tester for Car Motorcycle Marine
  • 【Advance Function】 The timing light is designed to re-timing your car's ignition to get the best performance that you can.Capable of testing the ignition timing scale on the engine flywheel or belt pulley intuitively to adjust appropriately.Able to detect the automotive knock suppression control system and vacuum advance angle control system, change its advance angle with the speed change.
  • 【Strong Flash & Sliding Sensor Clips】 The sensor clip is red and black to distinguish positive and negative poles, easy to use and more secure. It's sliding clamp-on inductive pick-up, for easy and safe hookup.The special blue-white xenon tube can produce a very strong flash,so that it can work even in the daylight.
  • 【Multiple Protection Functions】 The ignition timing light has the function of reverse polarity and overload protection, which can effectively protect the safety of batteries and equipment. In addition, the metal alligator clip is also covered with a rubber sleeve protector, which is safer to apply.
  • 【Wide Application】 This engine timing light is suitable for automobiles, motorcycles, ATVs, RVs, boats and all two-stroke or four-stroke gasoline engines, easily operate on 12V ignition systems. Its speed is up to 1000rpm.
  • 【Handle Pistol-type design】 Ergonomically designed with comfortable press keys, great Press feeling and easy operation.The shell of ignition timing light is made of high-quality ABS material, which is durable and can maximize the service life.
  • 【Three Years Warranty】For any quality problems. If AUTOOL Timing Light has any defect, we will provide new replacement or solutions for our customers until satisfaction without delay, and provides lifetime technical support. For any needs, you are warmly welcomed to contact us and we will get back to you ASAP within 24 hours.
No. 9
Teen Dream Ignition Timing Light, 12V Engine Timing Light with Strobe Lamp Inductive Petrol Ignition Timing Light Automotive Tool for Car Motorcycle Marine Lawnmower
  • ★【12V IGNITION TIMING LIGHT:】The 12v engine timing light shell is made of strong impact ABST and it has high-brightness hernia lamps which it is easy to see the positive time mark. The timing light is suitable for cars, motorcycles, boats, all two-stroke and four-stroke gasoline engines, and can easily run on 12V ignition systems.
  • ★【TIMING LIGHT SPECIFICATION:】Input voltage: 12V; Sension size: φ10mm; Motor: 200-10000R/min; Work temperature: 0-40 ° C; Trigger point: outside the high-voltage coil of the first cylinder; Sensor Clips Cable length up to 4.5 ft; 0.2-0.8A, 3W
  • ★【ERGONOMIC PISTOL GRIP DESIGN: 】The handle pistol-type design of Ignition timing light is ergonomically and comfortable press keys, feels good, facilitates the operation. More ergonomic in the narrow confines of the car's engine compartment.
  • ★【STRONG FLASH & SLIDING SENSOR CLIPS:】The sensor clip is red and black to distinguish positive and negative poles, easy to use and more secure. The blue-white xenon tube can produce a very strong flash so that it can work even in the daylight.
  • ★【MULTIPLE PROTECTION FUNCTIONS:】The ignition timing light has overload protection, which can effectively protect the safety of the battery and equipment. In addition, the metal alligator clip is also covered with a rubber sleeve protector, making it safer to wear.
No. 10
ROADGIVE 12V Engine Timing Light Strobe Lamp Inductive Petrol Ignition Timing Light Automotive Tool with Spark Plug Tester for Car Motorcycle Marine Lawnmower
81 Consomer Reviews
ROADGIVE 12V Engine Timing Light Strobe Lamp Inductive Petrol Ignition Timing Light Automotive Tool with Spark Plug Tester for Car Motorcycle Marine Lawnmower
  • [Accurate Timing] The Ignition timing light shell is made of strong impact ABST and it has high-brightness hernia lamps which it is easy to see the positive time mark. Timing gun is designed to re-timing your car's ignition to get the best performance that you can.
  • [Durable & Reliable] Material: impact ABST shell and high brightness hernia lamps; Input voltage: 12V; Sension size: φ10mm; Motor: 200-10000R/min; Work temperature: 0-40 ° C; Sensor Clips Cable length up to 4.5 ft; 0.2-0.8A,3W.
  • [Handle Pistol-Type Design] The handle pistol-type design of Ignition timing light is ergonomically and the button is comfortable, feels good, facilitates the operation.
  • [Sensor Clips] The sensor clip is red and black to distinguish positive and negative poles, easy to use and more secure. The blue-white xenon tube can produce a very strong flash.Strong flash & sliding sensor clips.
  • [Wide Compatibility] This engine timing light is suitable for automobiles, motorcycles, boats and all two-stroke or four-stroke gasoline engines, easily operate on 12V ignition systems.
No. 11
Innova 3568 Digital Timing Light
  • Top-of-the line timing light with direct reading advance scale adjusts from 0-90 degrees
  • Works with most ignition systems: conventional, electronic and computer controlled systems - domestic and import
  • Digital tachometer ranges from 249 to 9,990 RPM including Patented Skip Circuitry Test up to 9,990 RPM
  • Split-screen digital LCD readout displays tachometer and advance functions
  • Slim, rotating barrel for better aim at timing mark
No. 12
Mulcort ZC100 Professional Inductive Ignition Timing Light Ignite Timing Machine Timing Light Car Motorcycle Ship Repair Engine Automobile Detection
  • Focused lens provides light for high visibility of timing mark.
  • Re-timing design makes your car ignition get the best performance.
  • Suitable for cars, agricultural and marine engines, easily operate on 12V ignition systems.
  • Detachable clamp-on inductive pickup, easy and secure to connect.
  • The ergonomically designed handle makes you feel more comfortable.
No. 13
KZYEE KT60 Digital Timing Light, LED Display 12V Automotive Ignition Timing Light for 9V-16V Ignition System Strobe Lamp Detector, Portable Timing Check Auto Vehicle Motorcycle Marine Repair Tool
  • [DIGITAL DISPLAY PANEL] The KT60 timing light is a digital model with indicator lights and a LED screen. The four buttons let you switch between 4-stroke and 2-stroke, display the RPM and ignition angle, and easily increase or decrease the ignition angle. You can use it to measure the engine RPM and adjust the ignition timing. This trigger activated timing provides accuracy up to 8,000 RPM, the digital display allows you to easily diagnose and make precise adjustments.
  • [COMPATIBLE WITH 2-STROKE OR 4-STROKE ENGINES] Works with both 2-stroke and 4-stroke Pestrol engines. Easy-to-use button saves you a lot of work adjusting different engine types in the store. Works on 6 and 12 volt vehicles (6 volt operation requires a separate 12 volt car battery for power).
  • Reverse Polarity Protection Battery clamps have strong springs for a secure and reliable connection.
  • [HIGH IMPACT ABS HOUSING] Rugged ABS, durable housing that is shock resistant and can withstand daily use. It is a lightweight timing gun that is simple, easy to use and highly efficient for your timer to maximize the efficiency of your engine.
  • [REVERSE POLARITY PROTECTION] Equipped with sensor clips in red and black color to distinguish polarity. Inductive pickup to clip on for easy connection. Also, the lamp has a 4.9 foot long grease resistant cable. KT60 is the ideal timing tool for the discerning do-it-yourselfer or professional technician who wants to check and adjust ignition timing on 9V~16V gas engines such as automotive, snowmobile, marine, lawn mower and industrial engines.
No. 14
Innova 3551 Inductive Timing Light , Black
  • Checks timing, diagnoses a no-spark condition, checks for electronic advance/retard and more
  • Works with most ignition systems: DIS, conventional, electronic and computer controlled systems - domestic and imports
  • Patented Skip Circuitry Test up to 9,990 RPM
  • Slim, rotating barrel for better aim at timing mark
  • Protective hand guard for one-hand operation
No. 15
Timing Light 12V Ignition Timing Light Automotive Strong Flash Timing Lights with Sliding Sensor Clip,Long Test Lead, Reverse Polarity Protection, Overload Protection for Car, Motorcycle Petrol Engine
  • 【Powerful Ignition Timing Light】The timing light can intuitively detect the ignition timing scale on the engine flywheel or pulley to make appropriate adjustments.It can detect the automotive knock suppression control system and vacuum advance angle control system, and change the advance angle as the speed changes.Timing light is suitable for automobiles, motorcycles, ATVs, RVs, boats and all two-stroke or four-stroke gasoline engines.It works on 12V ignition systems. Its speed is up to 1000rpm.
  • 【Why You Need Timing Lights】Under the long-term normal wear and tear of the engine, the timing belt and pulley are regularly replaced, and the cylinder pressure drops, so the ignition timing needs to be readjusted to improve engine performance and efficiency. Timing light automotive can be used to record timing changes due to ignition system failure or resetting timing when vehicle components are changed.
  • 【Strong Flash Timing Light with Sliding Sensor Clip&Long Test Lead】The special bulb used in timing light produces a very strong flash so that the timing marks on the engine can be viewed in bright light or even in sunlight, which is very convenient for you to adjust the ignition timing. The spark plug sensor clip is a sliding clip design for easy and safe hookup of the high voltage line of the No.1 cylinder. The test lead is 4.54FT long, which allows you to test the whole ignition system easily.
  • 【Durable Timing Light with Ergonomic Handle&Strong Bite Clips】The handle of the timing light is ergonomically designed, its handle shape and button are comfortable for easy operation. The shell of timing light is made of high quality ABS material, which is impact-resistant, not easy to wear and durable. The metal alligator clips are covered with rubberized sleeve protector for safety. And the clips with strong bite force are not easy to fall off.
  • 【Polarity Reverse Connection Protection&Overload Protection】Timing light is deigned with polarity reverse connection protection. It will prevent the user from damaging the device or affecting the car or battery in the event of mis-operation. Timing light also has overload protection. If the current or load is too large during the operation, timing light will automatically disconnect the current to protect the battery and device.
  • 【Easy Operation】Clamp the red clip to the positive terminal of the vehicle's battery. Clamp the black clip to the negative terminal. Hook up the spark plug sensor clip to the high voltage line of the No.1 cylinder. Note: The arrow on the sensor clip should point to the direction of the spark plug to work properly.
No. 16
Innova 3555 Advance Timing Light
  • Advance dial enables user to check base timing, mechanical advance or retard and electronic advance or retard applications.Fit Type: Universal Fit
  • Works with most ignition systems: conventional, electronic and computer controlled systems - domestic and import
  • Patented Skip Circuitry Test up to 9,990 RPM
  • Direct reading advance scale adjusts from 0-60 degrees
  • Slim, rotating barrel for better aim at timing mark
SaleNo. 17
Actron CP7527 Inductive Timing Light 10.30 x 12.80 x 12.50 inches
  • Actron's CP7527 Inductive Timing Light is designed for standard base timing with on/off touch control
  • Use to measure and set initial timing, check and measure centrifugal advance, and measure vacuum advance
  • Works on gasoline powered vehicles equipped with conventional, electronic, computer controlled, DIS, or 2-cycle ignition systems
  • Features: super bright Xenon flash that makes it easy to see timing marks, all-metal inductive pickup, durable ABS housing, and heat resistant over molding on battery clips
No. 18
OBD-I & OBD-II: A Complete Guide to Diagnosis, Repair, and Emissions Compliance
  • Banish, Greg (Author)
  • English (Publication Language)
  • 160 Pages - 06/09/2023 (Publication Date) - Sa Design (Publisher)
No. 19
OTC 3365 Professional Advance Timing Light
  • Professional advance timing Light allows accurate adjustment of base and advance timing reading
  • Unique features include an adjustable knob that measures centrifugal vacuum and computer advance and an on/off touch control
  • Includes all metal inductive pickup and reflected super bright Xenon flash
  • Durable plated ABS housing with over-molded grips
  • Easy to install no set up required and connects easily into the vehicle's OBD II connector and is able to display status in 15 seconds
No. 20
Actron CP7529 Digital Timing Light with Advance, Tachometer, Flashlight, and LED Display, Gray
  • Actron's CP7529 Digital Timing Light features microprocessor-controlled circuitry and is loaded with advanced features including a bright LED display, mode indicator lights, and Xenon flashlight
  • Use to measure engine RPM and advance, and set initial timing, check and measure centrifugal advance, and measure vacuum advance
  • Works on gasoline powered vehicles equipped with conventional, electronic, computer controlled, DIS, or 2-cycle ignition systems
  • Digital LED tach display reads 0-9999 RPM, advance display indicates to 1/10; includes: 2/4 cycle and RPM/advance mode lights, RPM advance selector button, and up/down buttons
  • Features: super bright Xenon flash, all-metal inductive pickup, durable ABS housing, heat resistant over molding on battery clips, and comprehensive instructions in English, Spanish, & French

How to choose a good automotive diagnostic timing lights

Does the idea of finding a fantastic automotive diagnostic timing lights make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in automotive diagnostic timing lights. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top automotive diagnostic timing lights products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top automotive diagnostic timing lights on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top automotive diagnostic timing lights brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top automotive diagnostic timing lights based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the automotive diagnostic timing lights were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good automotive diagnostic timing lights, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your automotive diagnostic timing lights.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting automotive diagnostic timing lights for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our automotive diagnostic timing lights. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what automotive diagnostic timing lights should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on automotive diagnostic timing lights.