NAA Ford Wiring to 12-volt system

E Weidmayer · Jul 20, 2014

I have a NAA Ford which I am converting to 12-volt.
I have a 1984 Ford Ranger Alternator which requires an external Voltage Regulator, which I bought from NAPA. The Alternator posts are Grd, Bat, Flo, Sta. The Voltage Regulator tabs are I, A, S, F. However I do not know how to wire them. Does anyone have a wiring diagram for the 12-volt system? Thank you for your help.

Bob · Jul 20, 2014

Here"s a simple way to wire the alternator and regulator.

<img src = "http://www.gondtc.com/~blweltin/Bob/SimpleFordAlternatorCircuit2.jpg">

Outside of the wiring from the solenoid to the neutral safety start switch and any lights desired it"s that simple.

Do you require an ammeter?

E Weidmayer · Jul 23, 2014

Yes, I have an ammeter. Do I use the output wire from the alternator to thread through the ammeter?

JMOR · Jul 23, 2014

(quoted from post at 12:37:31 07/23/14) Yes, I have an ammeter. Do I use the output wire from the alternator to thread through the ammeter?

No, I wouldn't as that connection will only display alternator output, never a battery drain from loads, etc. I would use the conventional "net" reading ammeter arrangement, where it will display current into the battery (charging) as + and current out of the battery (discharging) as - . Took a little liberty (as always

with Bob's mighty fine drawing and added the 'net' ammeter wiring.

NAA Ford Wiring to 12-volt system

E Weidmayer

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Bob

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E Weidmayer

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JMOR

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