Alternator Wiring Question

[MaineVette]

Hey guys, looking for a sanity check before getting too deep into this...

I bought a new one wire capable 100 amp alternator and need to wire it in (https://www.summitracing.com/parts/pwm-27297/overview/). Obviously the original alternator had several additional wires, most of which seem to be no longer necessary. I'm thinking the easiest way to deal with this will be to run a separate wire directly from the alternator to the starter terminal which is where everything else seems to connect together.

Based on guidance from Powermaster it looks like I'd need to run an 8 gauge wire from the alternator to the starter terminal.

Does this make sense? Any downsides of not using the original wiring system? It seems to me the new alternator would just burn up the original charge wire if I used it. Thoughts?

[vito]

Tim,

I have mine running off the starter. no problems, eeeer so far.

one fuse for each fan

[Brookster]

Maybe this will work!

[rbryce1]

Hey guys, looking for a sanity check before getting too deep into this...

I bought a new one wire capable 100 amp alternator and need to wire it in (https://www.summitracing.com/parts/pwm-27297/overview/). Obviously the original alternator had several additional wires, most of which seem to be no longer necessary. I'm thinking the easiest way to deal with this will be to run a separate wire directly from the alternator to the starter terminal which is where everything else seems to connect together.

Based on guidance from Powermaster it looks like I'd need to run an 8 gauge wire from the alternator to the starter terminal.

Does this make sense? Any downsides of not using the original wiring system? It seems to me the new alternator would just burn up the original charge wire if I used it. Thoughts?

I have a 100 amp single wire alternator and you really do need to upgrade to a #8 wire. The stock alternator only put out around 40 amps, so the stock setup with a #12 wire was enough. I ran mine from the alternator directly to the positive terminal on the battery. I am also running marine battery posts with screw stud connectors. Might be a lot easier to run it to the starter with regular battery cables. Either one will work. I just didn't want any connections between the alternator and the battery.