× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Tachometer & Warning Lights
Posted to Technical Discussion Forum on 6/5/2016

[...trimmed text...]

David, hello. Be careful if you remove the pig tail and then just see base voltage (battery voltage), because you may erroneously assume the alternater is out of the circuit. You may even increase th... Login to read more.