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Old 07-22-2023, 04:32 PM   #1
macs61
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Join Date: Jun 2018
Location: pleasanton. ca
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Question one wire alt

Have my truck a 61 chevy stepside completely wired with american auto wire
Decided to install vintage air the altinator that came with the kit is one wire original alt was1main wire and 2wires to plug. Instructions say to run wire from alt tp positive on battery.American auto wire has alt to fuse block and bat pos to starter please help me understand this.
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Old 07-27-2023, 03:04 PM   #2
raidmagic
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Re: one wire alt

I've always run it to the big post on the starter.
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Old 07-27-2023, 06:38 PM   #3
61hawk
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Re: one wire alt

I just did this yesterday on my '65 with a GM one-wire alternator. It should be wired just like in the instructions... 6 gauge wire from battery post(big post) on the alternator to one lug on the fuse block. On the same fuse block side the 6 gauge wire runs to the battery lug on the starter.

For the 10 gauge red wire, it goes from the opposite fuse block on the non-crossover bar lug (just like in the instructions.). It runs into the cab to the plug on the main wiring harness with the red 10 gauge wire and purple 10 gauge wire. Just make it look exactly like the picture in the instructions. The purple 10 gauge wire runs down from that same plug in the cab to the ignition connector on the starter.

Alternator plug with the one wire just goes from the only place it can plug into on the alternator and the wire connects to the battery post on the alternator.

To complete this circuit, you just need to run a positive battery cable from the battery to the battery lug on the starter.

Done.
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