Chevy alternator in a 1972 Datsun 620

[Jonzy]

Does anyone know how to put a 3 wire Chevy alternator in to a 1972 Datsun 620?

[yello620]

Are you talking about the older GM 10si style alternator that was used from the early seventites to the mid eighties?

 

Yes it can be done, i have one on mine. Just dont fall for the generic GM one wire alternator. They are crap.

 

I will have to look tomorrow at how it is wired, unless you can find a picture of it in my truck thread. I think that it is titled "my yello 620".

[Jonzy]

Thank you Yello620. That would be greatly appreciated.

[imtb]

Its a super easy upgrade I just did mine. If you have the plug that goes in the top of the chevy alternator the ones the field the other is the sensor wire that comes on when you turn the key. If you need a pic I can take one of mine. I have 510.

[72 327]

Although this is a Chevy engine in my truck. There is this little adapter for it, I think $3 it has a resister that jumps the field windings and allows you to make it a 2 wire install (one to batt and one to key or switch to power the alt).

 

Edited December 2, 2009 by 72 327

[imtb]

Here is pic of mine. You can see the red wire just goes back to the alternator for the feild and the other wire goes to the idiot light.

 

[yello620]

Well with that last pic, you certainly dont need a picture of mine. Looks the same anyways.

 

And i had forgotten all about getting this info for you. sorry

[Jonzy]

Thanks guys for all of your help. What amp is the alternator that you used. I took mine in and was told that its no good so in need to buy a new one. Please let me know which one will work.

Edited December 3, 2009 by Jonzy

[imtb]

Mine is 63amp a/c delco like for 78 chevy impala. I can get hold off a chrome one for $100.00 or regular finish for $65.00 with the plug.