Wiring chart
It is the ground that goes to what you are towing
SOURCE: 1988 chevy 3500 runs really bad!
I have the same truck I've been looking for information on a different subject. I am an ASE technician I may know what might be causing your problem. First off the white wire on the coil that goes to nothing is your test wire it's not going to be hooked up unless you are performing a test to ensure that the coil is working. Just changing parts often times does not solve the problem and it can become very expensive and make things worst for the next guy to fix. it's going to be in one of two systems Fuel or Ignition since you just did things to the ignition system I'd start looking there check the firing order needs to know what engine you have before I can give you the firing order. is this a V6? V8 5.7? what all did you replace during your tune up? it could be that one of the plugs are not gaped correctly or tightened down which could cause damage to the head requiring the valves to ground to correct the problem. Your catalytic converter may also be causing the problem one the et hot and melt they start blocking the flow of exhaust. If you would like to read more on that check out this site it has some very good information. http://www.aa1car.com/library/converter.htm
SOURCE: spark plugs and wires for a 2000 chevy blazer
Hi,there is label number on spark plug wires.try to match the same number and replace one spark plug wire and one spark plug at the time!!!
good luck!!!!!!
SOURCE: fuel gauge problem not working
its more likely the sending unit resistor inside the tank. sometimes you can replace just the float resistor with another working used one but most new ones come only as the complete unit
Testimonial: "was real helpful am going to drop the tank and change thank you"
SOURCE: computer ground wire on 2000 chevy s-10 truck
the ground is right behind the left side of motor on fire wall
firat of all check and make sure you have a real good ground or otherwise you will lose current to another wire and this can short out and cause the lights to malfunction.
White: Ground
Brown: Running
Yellow: LT and Stop
Green: RT and Stop
This is the wiring code for the 4 wire trailers and
Wire a round seven-pin hitch, typically sold without a wiring harness, to the vehicle observing the following color codes: Run a white 10-gauge wire between ground and terminal one, run the blue 12-gauge wire between the electric brake controller and terminal two, the brown 14-gauge wire between the taillights and terminal three, the black 10-gauge wire between the permanently live 12-volt supply and terminal four, the yellow 14-gauge wire between the left turn/brake light and terminal five, the green 14-gauge wire between the right turn/brake light and terminal six and the purple 14-gauge wire between the backup light and terminal seven (in the center).
GOOD LUCK
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