Wiring diagram 1991 GMC topkick needed - Fixya wwwa›Forum›Cars & Truckswiring diagram 1991 GMC topkick needed I need to have the wiring diagram for the ignition relay fuse, it keeps - Cars & Trucks questionHi there,
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Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US. Here's a link to this great service Good luck!if you replaced fuel pump i would look at backward wiring when replaced and i would start at the source of work if your vehicle was working fine before replacement then 9 out of 10 it will be your fuel pump wireing
sometimes when putting wireing back together the connectors have the missing clip and in turn you can turn the wireing in both directions now where positive is touching the ground on both sides of connector kris kross problem check your work this is crucial use a test light to find the right wires where they go0there's a short somewhere causing that amperage to go up0Hi there;
Here is the wiring diagram for the trailer wiring for your truck.
Hope this helps
Farrout!0I'm curious, does this vehicle have an alarm/remote starter? If so I expect the installer didn't wire it correctly it was an all too frequent issue, with inexperienced installers we had . I would first suspect any add-on device first (if any) In answer to your question I know it does have a relay (Starter solenoid is a relay and built onto the starter) As far as it being a relay or the IGN switch I'm skeptical.0I understand that there is a relay box under the hood with 3 relays. Which is which I don't know. However if you are blowing the fuse TO the ecc relay, then the relay must be bad. This relay controls the spark.0 I need a wiring diagram for a 1991 GMC topkick. I am having I need a wiring diagram for a 1991 GMC topkick. I am having an issure with the ignition relay fuse blowing after the - Answered by a verified Technician