I had My 70 Charger fry the harness when the Alternator shorted. The Amp wire melted and shorted to a hot ign wire and the engine would not shut off.Now on My 68 R/R the harness is out for restore and that same ckt is melted. I have a new firewall plug coming and will modify,get rid of the Amp gauge ckt but leave the gauge in. I will use an aftermarket Volt meter.You would think MaMopar would of put a fuse link in there as a safety. Silly engineering if you think about it. Where is Ralph Nader when you need him. HA.