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I'm transplanting a 69 Cadillac engine into a piece of equipment. If
anyone is familiar with the wiring between the voltage regulator and the
alternator please take a look and see if I've got this right...should
have taken better notes when we were pulling the engine, but didn't.
Voltage regulator is a metal box on the firewall which is maybe 3"
cubed. On the bottom is a flat connector with four wires. In addition,
there is a black ground wire attached to the outside of the box.
The wires on the voltage regulator (looking from the front of the car)
are (from left to right) blue then white then red then brown. The blue
and white I have positively identified and connected to the plug on the
back of the alternator (field wires?). The red is connected to the
positive output post on the alternator. The first three I'm pretty
confident in. The fourth wire from the voltage regulator is brown and
my guess is that it's a negative source and should be connected to the
negative post on the alternator. The black ground wire coming off the
case of the voltage regulator is also a bit unclear. Does that just go
to chassis ground or should it go the battery negative?
If I've got some of this fouled up, please let me know.