Hope it works for you, if not, you may need to verify your wiring
Hope it works for you, if not, you may need to verify your wiring
No need to re-invent the wheel. But we can make it better
Hi Ralmo94, you are right, it is a wiring issue. I took the purple starter wire coming coming through the firewall and connected with the purple starter wire from the fuse block. it was pinned to C2 block. I went to put the negative battery terminal on and it sparked. Now I am a bit lost as where the wiring issue could be coming from. There is only 3 wires coming out of the firewall that I need to use with the stock harness/fuseblock/PCM for the engine to run.
The purple starter wire from the firewall is hot all the time. I don't believe this to be correct. But I have not mucked with the ignition inside of the truck.
Or is this normal for a 93 GMC? Any ideas on what I am missing?
This is how it is currently wired from fire wall:
large Purple starter wire is pinned to C1 A3 in fuse block.
Large Pink wire ignition hot in run/start pinned to C1 A9 in fuse block
Large red - hot at all times pinned to A7 in fuse block.
small pink ignition hot in run/start -pinned in C1 C9
Was the truck operation before the swap?
If so, was the purple wire going to the starter?
Iirc in 93, the wire went right from the ignition switch to the starter solenoid without the fuse box
No need to re-invent the wheel. But we can make it better
Yes the truck was running and the purple wire went from the ignition switch through the firewall directly to the starter. Any idea why the negative terminal would spark now?
So the starter wire is hot all the time? I would suspect a faulty ignition switch. Unless its hot after the relay, then I would suspect a sticky relay, they do stick sometimes.
Then of course there is the possibility that no one likes, that it is shorted with another wire making it hot.
You will have a small arc when you connect it usually. The thing is how small is the arc, is an interior light or something on? Maybe an underhood lamp?
No need to re-invent the wheel. But we can make it better
the book I have says the starter wire is hot while cranking but that is not what I am observing. Maybe there is a wire short in the dash. I will have to look. The under hood lamp is powered off a junction block on the passenger side of the engine bay. Thank you for helping, I really appreciate it. I need to do some more investigating.
Yes the starter wire should definitely not be hot all the time, if you find it, I'll bet you also find the source of the arc. Hope it's an easy fix for you.
No need to re-invent the wheel. But we can make it better
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