Hey folks! I'm still having a heck of a time with my '60 F250 223 inline 6 and battery charging... can't get that red generator light out. I've replaced the generator with a rebuilt one, had a new regulator in there, and replaced all the wring from the generator to regulator. I need somebody to tell me the wire colors (from the harness that goes back to the firewall) that hook up to which regulator terminals... any assistance would be very helpful!

 

There should be only two wires from the firewall side. The small one (yellow/black stripe ) goes to the "A" terminal and the large one ( Yellow ) goes to the Bat/B terminal. There is also a large Yellow from the Bat terminal to the horn relay..

Did you polarize the new generator?

 

My manual only shows a yellow with black stripe wire going to the A terminal... which is what the truck has and it is hooked up.


Just double checking to make sure that is indeed correct... running out of ideas!


I did polarize the generator, remade the wiring harness from the generator to the regulator and the wire leading from the regulator to the positive side of the solenoid... all this after the battery fell out of the tray and fried the before mentioned goodies. Learned an important lesson that day!


I originally thought the dash light was just lying but the battery (new battery also) does go flat after awhile, its not charging.


Its a pretty basic circuit but somewhere there's a kink... I don't have the stuff to test a regulator so i'll try a NOS replacement and see what happens.

 

If you have nothing to test the output of the generator or regulator use the old shade tree method. Turn your idle speed up to about 1000 rpm and remove the + battery cable from the battery, if the charging system is working the truck will remain running, if it dies you know something in the charging system isn't working..

 

Cute trick! I'll have to give it a try

 

Good luck. I just want to clarify that there is only one wire to the "B" terminal on the regulator as you stated. The second wire on mine was an alteration I made and forgot about, sorry.

 

Got it!


Its been a long process but in the end I had to replace the regulator, generator, wiring, clean the connections and swap out the bubba up'd too small battery cables. 55 Years of ham fisted fix's were standing in the way of 13.8 volts at the battery.


Now on to the king pins, radiator, leaking seals, and more, lol!