Hi Jerry...
Thank you for getting back to me.
I took the truck down to get a new exhaust put on... to avoid burning up the battery, I disconnected the plug at the regulator. It was a 4-wire in-line plug. In other words, the plug was long with each wire next to each other. I think that is stock.
I always assumed it was a Delco Heavy-Duty alternator and I thought it stated Delco on it, but I cannot verify that until I get the truck back tomorrow.
I really like the alternator because of all the comments and it does help with all the lights on the wrecker, so if I can repair the regulator, that would be great.
My email is
[email protected].
...Russ
