I replaced at bad voltage regulator in my altenator and there was a plug that goes in the side , a green one, I cranked up and drove it to see my aunt, first bump in the road, the car dies, i coast to a stop, it wont even click, Ive tested voltage and fuses and everything says its fine, there was a little black carbon spot where the green plug came loose but the car died immediately. there seems to be no reason for the car not to start
thanks wendy

 

Did you get the o-ring connection on the back of the alternator on tight? It really needs to be secure for a good connection. ??????? Possibly a reason

 

Did you leave any room for a power wire to ground itself or anything? Check all the fuses, primarily your main fuse.