The Stovebolt Site Forums The Shop Area The Electrical Bay Wiring from 6v to12v

I am in the process of changing my 46 1/2 ton from 6v to 12v. I have purchased a second tail light for the passenger sid, replaced one of the light sockets in the unit from a single filament to a dual filament for turn signals. I just removed the generator and installed a new alternator with an internal regulator. I have a copy of what was the original wiring diagram and a book on how to change from 6v to 12v......Here is my question....how do I wire the alternator...I see a large terminal with a red washer. i believe that goes to the battery. Does it go direct or through a switch, ammeter? The alternator also has a terminal plug with two prongs...where do the go...i am sure I have more questions but I will stop here. Thanks for any and all help.

Do a search of this forum for the answer to question number two. The question has been addressed a number of times. Question number one is...run a large wire (no smaller than #10awg from the red terminal to the large lug on the starter. Good luck.

hardy46,

Alternators are a modern mystery to me but I have successfully wired and used a 1-wire 12v alternator on a 1954 truck. There were two terminals on the alternator but I only used one, wired through the ammeter to the battery (that diagram is one I found on the Internet many years ago).

I have read that there are 1, 2, 3, and 4 wire alternators (and have seen different people use different wire-numbering terminology to describe the same alternator).

If you know the brand and model of your alternator, you might want to post it; and, if possible, post a few photos of your leads/terminals/connectors.

Tim

Hi,
The lug with the red washer needs 12 volts from the battery. The #1 spade should come from the switched side of the ignition. The #2 spade needs a jumper back to the red washer lug. I got this info from the guy at the local alt./starter rebuild shop. Works like a champ. Bob