Charging problems 67 Barracuda

brodphish said

So the two black wires on either side of the alternator are both the same color (black) and gauge. The one on the left in the pictures runs to a ground on the firewall. The one on the right (attached by the nut) appears to run to a sliver box just below the VR. The black square is the VR and the last picture is the silver box the alternator lead runs to.

The old alternator was hooked up just like the pictures I attached, including the green wire hooked up in the center. Although there was a different style connection to the alternator, as I mentioned. A clip instead of a set screw / bolt.

If I switched the left black and green wires would that solve the problem? Or take off the left black and put the green there? Just guessing.

Click to expand...

Here's the thing? Impossible for me to really tell from the photos. Don't overthink this. The "difference" is that....

up through 69, one field brush was forcibly grounded, that is, you could not UNground it. This left only one wire to connect and run over to the VR

Starting in 70 BOTH brushes were insulated and had terminals, because the VR was different. You can USE a later alternator by grounding one or the other of those terminals and hooking your VR (green) wire to the remaining brush

But what MIGHT be happening here is you might be grounding the green wire. I simply cannot tell from the photos.

Below is what your original alternator (when car was built) should look like. The hardware at 3 o'clock marked GRD is the grounded brush. Click the link

http://i282.photobucket.com/albums/kk273/AAR-Cuda340/Cars-Trucks/Alternator4.jpg