I cant figure out what this wire is for, it seems to come from the bundle of wires below the fuse box. I found another similar wire that appears to go behind the firewall into the car and is red, looks like its for the radio and I didnt mark that one so I assume its negative. I just did a swap and I wrote negative on the wire, so obviously it connects to the negative. However, initially i connected my brown and white ground wires to the starter like an idiot and put the wire in the image on the negative and smoke came from the fusebox and blew a wire in the fusebox apart. Could this have done more damage to the harness or anything that that wire is for? I searched cygnus I cant find the wire. But after searching the forums and making a post i found the two ground points for the brown and whites on the intake manifold and head.