atomarc, after reading his post again I think he may have grounded that 3rd wire, in doing so could have shorted out the diode assembly. That 3rd wire is to excite the idiot lamp when not charging. exp; Key on engine not running lamp on. Some GM's would not charge with out a bulb in the socket or a burned out bulb.

I didn't do it, no one saw me do it, you can't prove anything! "Bart Simpson"