Alternator not charging + multiple meltdowns…HELP!!!
An internally regulated unit should have worked fine IF IT was wired up correctly and IF of course there wasn't some fault in it. "New" (rebuilt) does NOT mean functional.
HOW THE original 70 and later alternator / regulator works. They are simple.
You have the dark blue "ignition run" IGN2 line from the key, which comes through the bulkhead and supplies "switched" underhood loads. That branches off and supplies the ballast resistor (which you likely bypassed) --the alternator field (lite blue) the VR IGN terminal, electric choke if used, and some smog doo dads on some later models.
The blue going to the alternator field is switched 12V to one end of the field magnetic coil. The VR so ;to speak, "controls the amount of ground" through the green wire on the other field terminal. BE SURE the VR is GROUNDED
Simplified diagram of the charging system. Ignore the ignition wiring. Notice that the same wire branches off to ignition, the field terminal, and the VR "I" (ignition) terminal.
An internally regulated unit should have worked fine IF IT was wired up correctly and IF of course there wasn't some fault in it. "New" (rebuilt) does NOT mean functional.
HOW THE original 70 and later alternator / regulator works. They are simple.
You have the dark blue "ignition run" IGN2 line from the key, which comes through the bulkhead and supplies "switched" underhood loads. That branches off and supplies the ballast resistor (which you likely bypassed) --the alternator field (lite blue) the VR IGN terminal, electric choke if used, and some smog doo dads on some later models.
The blue going to the alternator field is switched 12V to one end of the field magnetic coil. The VR so ;to speak, "controls the amount of ground" through the green wire on the other field terminal. BE SURE the VR is GROUNDED
Simplified diagram of the charging system. Ignore the ignition wiring. Notice that the same wire branches off to ignition, the field terminal, and the VR "I" (ignition) terminal.
