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Faulty regulator?

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Johnny4428:
When I switch the ignition on I get a bit of heat in the black lead coming from the switch at the connecting block. So after a bit of fettling I discovered that when I disconnect the black lead from the voltage regulator that cures it. There appears to be open circuit from all three terminals to ground when tested this can’t be normal. Thoughts anybody? (Bike is not running when tested)

cliff7:
As far as I know, with wires disconnected, all terminals on regulator should be open circuit to earth. Green wire should be connected to earth. Resistance between green and white wires (field coil) should be about 5 ohms. With wires disconnected resistance between black and green terminals on regulator should be about 35ish.

Bryanj:
There will be a path from black to white on reg with ignition on which puts power to the generator field coil immediately key is turned

Johnny4428:
Thanks guys couple of things there to check when I get my battery back or get a new one. Bought a new battery but think there is a duff cell in it put it back to local supplier who has it on charge for testing. I can do the resistance checks meantime.

Johnny4428:
Tested resistance between green and white terminals 45.5ohm also between green and black 45.5ohm .

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