Trouble Shooting Electrical Problems
It’s an art and a science to diagnose and fix electrical problems when they arise. Obviously, electrical shorts, bad grounds, low voltage transfer, and other problems are not just functionality issues; they are safety concerns. The last problem you want to deal with is an electrical fire in your car because it could burn the car to the ground and take your garage and house with it. To resolve a problem, you need a sound grasp of the principles, the right tools, and the correct working process.

.50 VDC is a bunch of voltage drop across a single switch. Yet, it still leaves almost 1.25 VDC of drop to be found somewhere else.

I removed the plug from the vehicle. After closely examining the contacts, I chose not to reuse this plug. I cut the plug from the mounting base for the low/high-beam switch, because I want to mount the switch back in the vehicle with the plastic base between the switch and floor.


Written by Tony Candela and published with permission of CarTech Books
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