Voltage regulator overcharging
I’ll check that tomorrow. Need to to put new heater hoses on it. This thing is killing me. Lol. Also with key in run position I’m getting 10.45 volts from the battery neg post to the blue run wire at the regulator.
'Mornin'........This reading is really just another way of measuring the 1.5V drop you found in your first post. Don't make this hard. You need to check the SUPPLY PATH from the battery to the blue regulator wire. If you have factory unmodified wiring this is generally.......
battery............fuse link...........through the bulkhead connector on the big RED, to the ammeter.........through the ammeter.........out on the big BLACK...........to the under dash WELDED SPLICE...........off to the ignition switch CONNECTOR.................through the switch...............out the connector on the BLUE............back out through the bulkhead through the BLUE..............(and last).........whatever "in harness" splice branches the blue off to what it feeds, depending on the year
"Rig" your self a long clip lead out of anything from no22 to no 16 or better so you can hook one meter lead to either battery neg or pos and get to the under-dash and other areas
"Chase" the path...........most likely the drop (can be more than one)
the RED wire connection at the bulkhead......
the AMMETER connections and connectors
the AMMETER itself
in rare cases the WELDED SPLICE
the IGNITION SWITCH CONNECTOR
the IGNITION SWITCH itself
the BLUE bulkhead connector
any other crimps/ terminals and or harness splices in the path
READ the MAD article........even if you don't do that mod, the article describes how this happens, and has a great simplified diagram
If you "don't" have, then go to MyMopar and download a service manual/ wiring diagram