Working on. 1973 Challenger ,it was a 340 auto car ,switched to a 440 4 spd ,after hooking up wiring harness I noticed a groung log on the alternator anyone know where this wire comes from I don't seem to have it .my car is discharging while running . I used a new engine harness for the 340 1973 Challenger ,is
So put a new regulator when I installed new engine . thanks Gregg

 

Alternator Housing grounds to the block.... Should be no need for a ground wire at that point???????????
Sounds like you lost power to the Alternator / Regulator....

 

Thanks were on the first start up just trying to sort out the discharge issue I'll check the battery while running in the am thanks

 

Thanks new to mopAr just trying to sort
Out the charging system