Hello all... its been awhile in fact years since i have been here
OK i have had charging issues for years. tried most everything suggested on here and the web
this problem was not consistent charging voltage would go from 14.7 to 15.7 and up ..
burnt up batteries .. replace voltage reg ..
fix is in the wiring ..
Blue wire (start run) from bulk head or big plug on fire wall runs in wiring harness
this wire also go to fuel shut off, vacuum sensor, alt , regulator .. computer
well this one blue wire from bulkhead in wiring harness.. is split into 5 more blue wires
this connector is crimped and is in the wiring harness .. right behind the brake Vacuum booster in wiring harness
looks like a cheap copper or brass connector with 6 wires in one crimp. .. this is called the J1 splice
replace this connector.. re-crimp.. and my voltage dropped from 15.9 to 14.7
EDIT ,,holds 14.2 with lights on .. 15.9 with heater fan on full.... hmmm
I hope this 15 min fix saves you lots of money,,, hell I hope you understand my typing
Have a nice day
Brad