Alternator repalcement

[SpecialK]

Greetings fellow CUCV enthusiasts. I have a M1031 that I'm doing an alternator swap on. I get aircraft alternators for free and decided to incorporate them on the 1031. I have the brackets modified and everything lined up nicely. My truck is 12 volts and I'm running two separate 12v systems. I'm wondering if anyone knows the specifics one the four wires connecting to the alternator? I know the main charging wire, but the other 3 I'm having trouble figuring out(alternators are a grey area for me).

 

[porkysplace]

Greetings fellow CUCV enthusiasts. I have a M1031 that I'm doing an alternator swap on. I get aircraft alternators for free and decided to incorporate them on the 1031. I have the brackets modified and everything lined up nicely. My truck is 12 volts and I'm running two separate 12v systems. I'm wondering if anyone knows the specifics one the four wires connecting to the alternator? I know the main charging wire, but the other 3 I'm having trouble figuring out(alternators are a grey area for me).

4 wires makes me think the alternators use a external voltage regulator , which means making wiring harnesses. Just because they are free doesn't always mean they are a good deal .

We really need more information on the alternators , like make and model numbers.

 

[nyoffroad]

It's been a long time since I messed with anything that had an external voltage regulator but it sounds like porkysplace is right.

 

[SpecialK]

porkysplace the alternators im installing have an internal voltage regulator. They are Nippon Denso. I know the pin out of the new ones im just trying to figure out the existing wires in the truck.

 

[porkysplace]

porkysplace the alternators im installing have an internal voltage regulator. They are Nippon Denso. I know the pin out of the new ones im just trying to figure out the existing wires in the truck.

This has got wiring diagrams , it's hard to say what you need to do with your altered system . Good luck.
[h=1]CUCV - GEN1 and GEN2 Exciter Circuit troubleshooting[/h]