Low battery symptoms

[blue62]

Originally Posted by Steelepuls

Kevin, I had the same issue with my 01S, where the first start is cold it has no problems turning over, but after a short stop to get gas or pickup food, the restart is slow. When I leave it for over an hour or two inbetween stops, the problem is not as noticeable. It isn't a battery issue or alternator, since those two were replaced recently with new parts. I've read here that the alternator wiring harness is heat soaked and causes the slow turnover.
I haven't confirmed that since i haven't fixed this yet in my car since it has always started, albeit slow. The harness is not too expensive, but I've heard it is a bear to replace.

Please explain to me how the alternator wiring harness is involved in the starter circuit.???