What are the two grounds on the back of the UIM for?
#1
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What are the two grounds on the back of the UIM for?
Just wondering what the grounds are for on the back of the UIM? Is it for anything specific like sensor wise?
#2
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"The ground is just as important as the hot lead on the car (in some cases more so) Since all the sensors work of of voltage across resistance there readings can vary with fluctuating voltage. By providing the best possible positive voltage connection (as well as a good return) or ground your voltages should remain more consistent and thus provide a truer signal to the ecu of what each sensor is actually seeing. I don't know about HP gains, but you typically get a smoother running car. When grounds start to fail, the current then seeks a path through what ever circuit it can find, which is usually characteristic of weird electrical issues, (lights dim or get brighter, warning lights come on when brakes applied or radio is turned on) just strange things happen. Grounds between the engine and chassis, exhaust and chassis, exhaust and engine, etc, can only improve electrical issues."
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