I mostly lurk and learn from this site but now I have a question. I have a like new '92 1/2 first year 550 EFI. The battery's been out of it for two seasons. Like a dummy I didn't mark the wires because I never figured it'd be out this long. Can anyone tell me, on the harness that goes to the positive side, one wire also goes to the negative. What color is the wire that goes to ground?