Re: 55 Electrics

Posted by Reyman R. Branting On 2008/3/12 22:16:14

For one of my 55 400s, I had a generator shop install an alternator and reverse polarity of the car from positive ground to negative. The starter spins the same way. The radio (with the old vibrator) worked, and the T/L still functioned properly. The amp meter shows discharge instead of charge with the engine running (I have yet to get under the dash to change those wires). He changed the connections to the coil to compensate for the polarity change, but I don't know exactly what was changed. The gentlemen retired, so I can't ask him exactly what he did.

He commented at the time that the change probably wasn't required, but apparently others making the conversion did it that way so he would, too.

If you get an electronic converter (vibrator replacement),
definitely buy one for the polarity you are using. You are guaranteed to blow it otherwise.

I'm installing a Vintage air conditioner. Vintage says definitely to use negative ground or their electronic stuff won't work. Darned if I know what "electronic" stuff is in an air conditioner. It occurs to me that maybe the salesman didn't know what he was talking about after all. Or maybe their blower motors reverse if the polarity is reversed.

Good luck!



Bernardi