72sunroof
Well-Known Member
Okay I have been chasing this for 2 months.
It is a 72 Charger with 70 amp alternator square back 2 field
Fully replaced engine wiring harness when restored 10 years ago
Replaced the bulkhead connector last year
Replaced the ignition switch and fixed al the connections {did this today}
Checked continuity from field wires to regulator ok
Checked continuity from blue field to blue on ballast ok
Checked continuity between fields ok
Checked voltage reading between blue wire in ballast and battery in run it is high 1.3 volts both before and after changing ignition NOT OK
Have tried 2 different regulators 1 is new Mopar reproduction with modern guts other is 1972 known good regulator both have great grounds
Wires are tight on amp gauge
Have a bypass helper wire from alt output to battery connection at starter relay 10 gauge with a fusable link.
Firewall has ground strap to back of engine
Even tried a known good 40 amp alternator same result
Where else to look?
It is a 72 Charger with 70 amp alternator square back 2 field
Fully replaced engine wiring harness when restored 10 years ago
Replaced the bulkhead connector last year
Replaced the ignition switch and fixed al the connections {did this today}
Checked continuity from field wires to regulator ok
Checked continuity from blue field to blue on ballast ok
Checked continuity between fields ok
Checked voltage reading between blue wire in ballast and battery in run it is high 1.3 volts both before and after changing ignition NOT OK
Have tried 2 different regulators 1 is new Mopar reproduction with modern guts other is 1972 known good regulator both have great grounds
Wires are tight on amp gauge
Have a bypass helper wire from alt output to battery connection at starter relay 10 gauge with a fusable link.
Firewall has ground strap to back of engine
Even tried a known good 40 amp alternator same result
Where else to look?