I have a 72 goon with a l20b and a 80 210 internally regulated alternator. I did a mild wire tuck three months ago and I put on a aluminum turnbuckle on my alternator instead of the stock bracket. I ran the car for a couple months after the wire tuck with no problems, I had the belt too tight with the new turnbuckle and ruined the bearings in the alternator. After I got a replacement alt the charging system has not been working right. When I first put on the new alt which was wired the same as the old, I was making to many volts like 17. Then I started to make barley 12 on my volt gauge. I talked to some people and discover that I needed the charge light so I wired one up but it doesn't work right either. It seems like the alt isn't putting any volts out through the T connector int the rear. I had it tested and all was well with it, so I know that I am missing something. Please help.
Thanks, Erik