The car is a 69' with a 396. The alternator and regulator appear to be wired as stock. My alternator has the heavy red wire off one post, a black wire off the other post going to the neg battery terminal and the blue and white wire from the plug off the back. The white wire has been disconnected from the alternator and the VR. The VR appears to be the original style. My question is why would the white wire be disconnected on both ends, what is its function? The car is being charged.