On my 1970 Monte when I hit the brakes the lights momentarily dim. I’ve noticed that on other cars that I have owned from the 1970s. The alternator is new a 63 amp alternator rewired for internal regulator. Also, all of the grounds are good. I have braided wire from the engine to the firewall in two places, the firewall to the frame in two places, and the radiator support to the frame. My question and wondering what your thoughts are on this. I was thinking of replacing the wire from the positive terminal to the terminal block, the alternator to the four splice, and the terminal block to the four splice connection with 8 gauge wire. I’m thinking larger gauge wire more capacity. I thought years ago, I read a post where someone did this You think that might help?
John S