Cordless Professional Circuit Tester

Easy to use. No ground wire needed.
Mfg Part #
ECS Part #
ATD Tools
Availability: Expected Ship Date: Jun 25, 2021
Does this fit my vehicle?

Product Details

ATD ToolsCordless Professional Circuit Tester part #:ATD-5503

  •  Tests circuits from 3 to 28 Volts DC 
  • LED Light & Buzzer Indicator 
  • Does Not Require a Ground Wire or Clip 
  • Safe for work on Automotive Computers, ECMs, Airbags, etc. 
  • Special V-Tip allows safe piercing and can be removed to test in hard-to-reach places 
  • Operates on replaceable long-life Alkaline batteries (included)

WARNING: This product can expose you to Di(2-ethylhexyl)phthalate (DEHP) a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi All All All
BMW All All All
Mercedes Benz All All All
MINI All All All
Porsche All All All
Volkswagen All All All
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.


ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings