Can tester SAFELY be used to test ECM signal going to coil and/or injector?

Its current draw is supposed to be about 18mA (green) and 24mA (red), however, the product ships with the following Safety Precautions: 1. For 12V DC systems only. NOT FOR ANY AC VOLT SYSTEM. 2. DO NOT USE THIS TOOL ON COMPUTER CIRCUITRY. 3. DO NOT TEST OR PUNCTURE SPARK PLUG WIRES WITH THIS TOOL. 4. Never use a Test Light to diagnose automotive air bag...

Is this probe safe enough to test 5V automotive reference wiring? Computer safe?

Hello. To be honest I’m not sure if it will pickup a 5v refurance I use it On 12 volt I have a power probe with the 5v connector for it. So I’m not 100 on the test ligh work on that

Does this tester require a connection to the car battery?

Has two alligator clips to connect to a car battery and a power plug so you can plug it into the power source in the dash. Works on any 12 volt circuit. I use it to fix cars and my electric trains.

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🔧 Illuminate your diagnostics with smart precision and effortless reach!

PLUG PLAY POWER - Connects effortlessly via cigarette lighter or alligator clamps for versatile testing
SAFETY MEETS COMFORT - Ergonomic grip design ensures secure handling during every diagnostic session
INSTANT VISUAL CLARITY - Tri-color LEDs (White, Red, Green) instantly decode voltage and ground status
PRECISION YOU CAN TRUST - Accurate voltage detection with ±0.5 measurement precision for professional-grade results
EXTENDED REACH NO LIMITS - 6-foot leads let you test hard-to-reach circuits with ease

The Innova 3420 Smart Test Light is a professional-grade circuit tester designed for safe, accurate voltage and ground detection across multiple automotive and electronic systems. Featuring 6-foot leads, a transparent handle with bright tri-color LEDs, and an ergonomic grip, it offers extended reach, instant visual feedback, and comfortable handling. Powered via cigarette lighter or alligator clamps, it delivers reliable diagnostics with ±0.5 accuracy, making it an essential tool for any tech-savvy professional.

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$73.97

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Manufacturer	Innova
Part number	3420
Item Weight	227 g
Product Dimensions	16.51 x 4.45 x 26.04 cm; 226.8 g
Batteries	3 AA batteries required.
Item model number	3420
Color	Clear
Style	Smart Test Light
Power source type	Corded Electric
Item Package Quantity	1
Measurement Accuracy	+/- 0.5
Specification met	REACH
Included components	Smart Test Light
Batteries Included?	No
Batteries Required?	Yes

Innova3420 Smart Test Light/Circuit Tester

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