Voltage regulator wires question...

[Giggity]

Manuals show green, black, brown wires. Mine has no black wire.
Any Idea why?

Thanks

[TopCatGr58]

I think I remember Scott/3Phase stating about the earlier Reg/Rects used the casing as a ground, so no ground wire, but the later models added one!?
T.C.

[oldyam80sg]

Upgrade to one of Geezers units-very nice plug and play unit!

[3Phase]

Manuals show green, black, brown wires. Mine has no black wire.
Any Idea why?

Thanks

Giggity, they left the Black wire off of the three-terminal connector because the six-terminal connector has a Black wire in it. Ground is ground and the voltage regulator in our bikes works by regulating the path to ground from the field coil return wire. The Brown wire in the three-terninal connector is (or should be) the system voltage and it's fed to the alternator field winding. The Green wire is the return from the alternator field winding, through the regulator to ground. In a sense, the Green wire is a variable ground.

Some sytems use a fixed ground and regulate the voltage going into the field coil but we don't have to worry about that for our bikes.

The Black wire at the Regulator/Rectifier six-terminal connector is not connected internally to the heat sink. I really don't know why. I put the test meter on the Black wire and on the heat sink -- no continuity. The Black wire is connected to ground on the outside of the Regulator/Rectifier heat sink and to the frame. If you want to test the voltage regulator the way the flow chart in the fine manual tells you to do it, use the Black wire in the six-terminal connector or the ground point on the heat sink. Unless you've taken the Regulator/Rectifier off of the bike, the Black wire and ground are the same. If you've taken if off of the bike, make sure you reconnect the Black wires to the frame or it won't work.

Regards,

Scott