Alternator / starter / stereo - Wiring help needed!
So, I'm diagnosing a hard starting problem. I remove the battery and tray, and here's what I found: The red/white 8 gauge wire marked "ALT TO STARTER" is completely eaten through from battery acid (before I bought the car). The cable starts at the B+ on the fuse block (photo #6) then merges into the wire harness at the rear of the engine (photo #4)
Does it connect to the starter at all?
If so does it go directly to the starter, then the alternator?
[I know it eventually leads to the alternator because there's continuity between the frayed end (where the acid ate through it) and the alternator.]
BTW, this car is wired for an aftermarket sound system. There's a fat zero gauge cable that directly connects the positive battery terminal and alternator (photo #5). There's also a cable (8 gauge or slightly thicker) directly connecting the starter and positive battery terminal.
So, can I just disconnect the damaged 8 gauge cable at the alternator (alternator to fuse-block) (photo #5) since the alternator's already connected directly to the battery via the zero gauge? Or does it serve some other purpose?
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Looks like instead of fixing the original problem, they just disconnected the Alt-Starter wire from the starter and left it where it was, then installed all new 'big 3' wires.
It should be fine as long as you don't reconnect the lead you have circled in green at the alt

Or you can pull it out to make it look pretty again










