Hello, so I have an '86 Iroc Z and I was attempting to change the spark plugs and I accidentally unplugged a green wire from somewhere around the exhaust manifold. The wire is on the driver's side and it came from a bundle of wires that attach to the compressor. So, there are four wires in this bundle; three of them connect to the compressor and the last one I have no idea. I've been trying to find where it goes for hours, so any help would be greatly appreciated!