6v pos ground alternator wiring.

I bought a 6v pos ground alternator from the Brillman company for my ‘51 Plymouth. All I have to do is use an 8ga wire from the alternator to the battery terminal on the voltage regulator and disconnect the field and armature terminals right?

 

Why not move armature wire at regulator to battery at regulator (as a junction) (use other end of original armature wire at alternator)? then delete field wire.

 

probably because the original wires are way too small?

 

I never really thought about doing that. It just might work. Not sure what gauge the wire it is but if it’s at least 8 gauge it should.

 

Ya, I based it on just a conversion vs an output upgrade.

So what amp alternator did you buy?

 

I'm ***uming that he came up with the 8 gauge wire size based on the alternator installation instructions?

but it sounds about right, and I'd be surprised if the original is thicker than #12

 

Lawyer print.

 

Brillman listed it as 40A. I specifically got this one because I didn’t want to over power the original ammeter. All other alts are 60A. The original voltage regulator has a max of 47A as that is printed on it.

An old Packard electric diagram shows between 8-10ga so 8 on side of caution

 

Based on your opening question. What gauge wire is the cars factory battery wire from the regulator to the battery?

 

It might be 10g. I’m not sure. Hard to tell since it’s cloth covered

 

A new #8 down to a #10 doesn’t make sense to me. If you really want a #8 wire. Send it directly to the battery vs to the regulator.

 

That was an idea I had. The only draw back is it won’t show a charge on the ammeter, only discharge. I could run a wire to the battery terminal and a wire to the battery itself which I think would shunt the current, halving the amperage that the ammeter would see. Would still show charge or discharge just not peg the needle

 

@ only a 40 amp alternator if it was mine. I’d do it the easy way as I mentioned in the beginning. Then the charging circuit pretty much is working as designed back in the day.

But I do like the idea of not sending all the charge thru the amp gauge also.

 

I looked at it and for sure it can most likely be used if it’s long enough for the alternator. Looks like 8-10ga to me. The caveat is the ignition wire and another is paired with it which would end up too short if I got it to reach the alternator. Not a big deal making them longer. Probably run a 12ga to the battery. It will reduce the current off the ammeter and the load off of the wire as well

 

I got the same alternator for my 55 Plymouth and ran 8 gauge to the regulator battery post. And it has been working great for a while. Then I Figured out what parts to use to convert a junk 12 V 1 wire to a 6 V. So now I have a backup for a 10th of the money.

 

Just had a chance to try to get the alternator on. Got burned on the bracket. Fits the engine bracket but does not line up the alternator correctly. Not sure if I should mess with trying to cut the bracket up to make it work or just get the generator working. I can take a chance and take it to the local electric motor place. They aren’t really good with generators in my experience but they do work on them.