Psi Wiring harness NEED HELP!!
11-21-2018, 08:06 PM
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Psi Wiring harness NEED HELP!!
I'm towards the end of my LS1 swap into my 91 pontiac firebird. The car started out with a v6 mated to a 7004R transmission, it now has a lm7 from a 2004 silverado 1500 and a 4l60e transmission. I had difficulty finding a wiring harness to modify that was drive by cable so I ended up purchasing a PSI harness in order to make things easier, here is the link to what I have. https://www.psiconversion.com/produc.../HAR-1090.html
I have it all wired up, I followed pockets guide to prep my old harness and have attached it to the C100 location where it went originally. I have everything plugged in and the battery in, but I currently have no power to any of the body harness. The orginal harness has power in it in the engine bay, the new harness has power in it in the engine bay as well but nothing has power inside the car. I can't seem to figure it out, I believe it is probably something really simple and I just don't know. This is my first engine swap and I am not great with wiring, at least not yet. My dad and I were supposed to do this but he passed away 2 years ago now and I'm trying to finish but I'm lost at this point.
I have it all wired up, I followed pockets guide to prep my old harness and have attached it to the C100 location where it went originally. I have everything plugged in and the battery in, but I currently have no power to any of the body harness. The orginal harness has power in it in the engine bay, the new harness has power in it in the engine bay as well but nothing has power inside the car. I can't seem to figure it out, I believe it is probably something really simple and I just don't know. This is my first engine swap and I am not great with wiring, at least not yet. My dad and I were supposed to do this but he passed away 2 years ago now and I'm trying to finish but I'm lost at this point.
11-22-2018, 02:19 PM
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Re: Psi Wiring harness NEED HELP!!
I'm towards the end of my LS1 swap into my 91 pontiac firebird. The car started out with a v6 mated to a 7004R transmission, it now has a lm7 from a 2004 silverado 1500 and a 4l60e transmission. I had difficulty finding a wiring harness to modify that was drive by cable so I ended up purchasing a PSI harness in order to make things easier, here is the link to what I have. https://www.psiconversion.com/produc.../HAR-1090.html
I have it all wired up, I followed pockets guide to prep my old harness and have attached it to the C100 location where it went originally. I have everything plugged in and the battery in, but I currently have no power to any of the body harness. The orginal harness has power in it in the engine bay, the new harness has power in it in the engine bay as well but nothing has power inside the car. I can't seem to figure it out, I believe it is probably something really simple and I just don't know. This is my first engine swap and I am not great with wiring, at least not yet. My dad and I were supposed to do this but he passed away 2 years ago now and I'm trying to finish but I'm lost at this point.
I have it all wired up, I followed pockets guide to prep my old harness and have attached it to the C100 location where it went originally. I have everything plugged in and the battery in, but I currently have no power to any of the body harness. The orginal harness has power in it in the engine bay, the new harness has power in it in the engine bay as well but nothing has power inside the car. I can't seem to figure it out, I believe it is probably something really simple and I just don't know. This is my first engine swap and I am not great with wiring, at least not yet. My dad and I were supposed to do this but he passed away 2 years ago now and I'm trying to finish but I'm lost at this point.
11-22-2018, 05:27 PM
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: Psi Wiring harness NEED HELP!!
Pretty much the whole car is powered by two red wires that go through c100. Trace those back to the source in the engine bay, and like Matt said, one is probably still loose.
Last edited by QwkTrip; 11-22-2018 at 05:30 PM.
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