- Joined
- Jun 18, 2001
I want to use the AC clutch shut off control function in the Gen 7. The output from the Gen 7 is a ground. Looking at the factory wiring (last schematic)
http://www.installationinstructions.com/vin7/GN Electrical System Schematics.pdf
The factory ECM uses A2 as a 12v out put to the passenger side relay and uses B8 as a gnd input signal from the same relay.
Looking at the relay it has one pin on top with two blue wires which one goes to the AC compressor and the other to B8 so that is the gnd? The 3 on the bottom are brown/blk, green/yell, and dark blue. The schematic shows all the same except the switched 12v being pink/blk and in my harness it appears to be brown/blk.
My understanding is that the factory ECM applies a 12v signal to the relay which is normally open. Once it receives the 12v signal it closes and grounds the dark blue wire to the AC clutch which disengages it?
I am trying to avoid wiring in a separate relay, so how do I rewire this relay to work with a ground input as opposed to a 12v? This appears to be a simple 4 post relay. I have two grounds on one post going to the AC and to pin B8. I have a 12v input, 12v pwr and a gnd out to the AC. So if I swap the green/yellow with the light blue wire and disconnect the ground signal wire coming from the AC do you guys think this will work?
Hope I didn't lose anyone in this confusion. It'll be easier to understand if you look at the schematic I posted.
Thanks
http://www.installationinstructions.com/vin7/GN Electrical System Schematics.pdf
The factory ECM uses A2 as a 12v out put to the passenger side relay and uses B8 as a gnd input signal from the same relay.
Looking at the relay it has one pin on top with two blue wires which one goes to the AC compressor and the other to B8 so that is the gnd? The 3 on the bottom are brown/blk, green/yell, and dark blue. The schematic shows all the same except the switched 12v being pink/blk and in my harness it appears to be brown/blk.
My understanding is that the factory ECM applies a 12v signal to the relay which is normally open. Once it receives the 12v signal it closes and grounds the dark blue wire to the AC clutch which disengages it?
I am trying to avoid wiring in a separate relay, so how do I rewire this relay to work with a ground input as opposed to a 12v? This appears to be a simple 4 post relay. I have two grounds on one post going to the AC and to pin B8. I have a 12v input, 12v pwr and a gnd out to the AC. So if I swap the green/yellow with the light blue wire and disconnect the ground signal wire coming from the AC do you guys think this will work?
Hope I didn't lose anyone in this confusion. It'll be easier to understand if you look at the schematic I posted.
Thanks