All Small Six Generator to 1G Alternator Conversion

[65MustangI6]

I’m swapping my 1964.5 Mustang from a generator to a 1G alternator and wanted to run it by the group to make sure my wiring plan is correct.

I’ve already made the physical swap of both the generator and external voltage regulator. I’ve also purchased the 1G alternator wire harness and a new regulator pigtail. Rather than purchase a different harness I was looking to use existing wires in my current harness.

As you can see from my hand drawn diagram, I’m planning to reuse the black/yellow wire from Harness #100, butt splice it to the yellow wire coming from the A terminal pigtail on the regulator and then carry the black/yellow wire forward to the new alternator harness and up to the positive side of the starter solenoid. The existing black/yellow is a larger diameter wire, so I don't see any issues with that.

For ignition, I’m planning to reuse the yellow/black wire from Harness #100 and butt splice it to the green/red wire on the I terminal pigtail on the regulator. Same as above, the yellow/black is also a larger diameter wire.

The F, S, and G wiring is straight forward and I would use the existing white (field) and black/red (ground) wires that are part of the existing harness. I would need to add a new white/black (stator) wire to the harness. I would run all three from the regulator to a new triple bullet connection to mate with the new alternator wire harness.

Does that all make sense? More importantly, is it right? Is there a better way? Any feedback is always appreciated.

 

[alwill923]

I know this is to late but might help someone else. I installed 10si alternators on my 65 truck and 1960 falcon. They have internal regulators so this eliminates the voltage regulator and wiring. Also inexpensive and available at any FLAPS.

 

[65MustangI6]

I know this is to late but might help someone else. I installed 10si alternators on my 65 truck and 1960 falcon. They have internal regulators so this eliminates the voltage regulator and wiring. Also inexpensive and available at any FLAPS.

Thanks alwill923. I was thinking of going to a one-wire alternator set-up but had this alternator and regulator from a 1966 Mustang on the shelf. If I decide to do some additional upgrades in the future (a/c, electric fan, etc.) I'll swap out this 1G for a 3G. For now, I'd just like to see if I can learn how to successfully modify from the generator to the 1G alternator.