1999 GMC Jimmy "checking ground wire" Questions

...ground wire for the power windows originates at the master switch and goes back into the cabin to a nearby ground. Put one lead of the test light on the hot wire (key on), and probe the ground ...

...you may have bad sockets, or the wiring under the rear going to lights is bad, maybe a bad ground, the ground wire is grounded at the rear before the bumper,start ther check for power and

...checking for power at the lights them selfs on the passenger side both wires have power with out a light in them but on the driver side only one wire is hit until the bulb is installed and after the ...

...Gray is power to pump, black with yellow is ground for pump. When key is turned grey wire gets power check good ground . If power and grounds are good replace pump if not fix ground or replace ...

...injectores will have battery power on one pin with just the key on the other wire will be pulsing ground while cranking. If it is pulsing and got power the fuel may not be there or its air and not ...

...for ground to the ECM. Instead of putting both leads to the plug you have to first find the ECM wire, then put the meter leads to that wire and ground on the battery. Again it should spike in ...

...ground this wire you will need a PCM. The old fashion ways still applies we use to ground the field to check that the voltage regulator is working, But in todays car PCM all does that. Your best bet ...

...wire a aftermarket stereo on a 1987 gmc jimmy using stock plug ins but every time i put on brakes stereo goes off Ive checked all wires to make sure none are bare also made sure nothing hanging up on ...

...fords do. Check the grey wire for power at pump connector when you turn on key. Big black one is ground. If power and ground is good then you have a bad pump. If no power check fuses and change ...

my tail lights on a 1992 gmc jimmy just stopped working? anyone know why? first check your fuses, then check the bulbs, then check the ground wires at the lights, then check the wires coming out of ...