Farmall BN

[Oldiron29]

New to me Farmall BN has been rewired by PO. one wire self eciting alternator.
From what I see it is wired corect, Has a mag and only kill switch to it.
Battery to starter + than to amp gauge. Aternator to amp gauge grounds are all good.
Had the alternator test and has good output. I even tryed a different gauge and a multi meter can't get a charging reading at the gauge? what up? Can some of you electric gurus help me out. I can't seem to get this thing right. oldiron29

 

[teddy52food]

Not enough speed to excite itself. Try wiring it up as a 3 wire.

 

[old]

Many of the one wire alternators need 2000RPM to self excite and that engine read lines way before that so yep best bet it to go with a 3 wire like what was used on a 1980 Chev pickup no power any thing no AC and cost of around $45 for one

 

[Oldiron29]

I saw the guy test it he said it was at 800 RPM. With the small pulley on alternator I would think I am making that much RPM. I would rather have the 3 wire so I guess I will rewire it with lamp and switch. It does not have a 1 and 2 plug
it says N and F what is your take on that? oldiron29

 

[old]

Does not sound like the common Delco 1 wire but some other brand.

 

[Oldiron29]

The label is unreadable.

 

[old]

Picture would help. Plus all the Delcos I have seen had the word Delco in raised letter some place on them