Re: Help identifying voltage regulator poles

Posted by Bob M on October 06, 2006 at 06:37:58 from (151.190.254.108):

In Reply to: Help identifying voltage regulator poles posted by Matt Williams on October 05, 2006 at 19:59:41:

Hey Matt - If you have an ohmmeter you can use it to figure out which regulator terminal is which.

Set the ohmmeter to it’s lowest range (ohms x 1). Connect one test lead – doesn’t matter which - to the regulator base. Then test each regulator terminal with the other test lead. Results should be as follows:

F (or FLD) – ~0 ohms
G (or GEN) – several ohms
B (or BAT) - open circuit (infinity)

Obviously the remaining terminal will be the L.

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Additional tests:

1 - Remove the regulator cover. You should find two relays inside.

2 - Attach one test lead to the regulator base and connect the other to the F terminal. Now push the voltage regulator relay armature down (the voltage regulator is the relay whose contacts are held SHUT by spring pressure). The meter should read several tenths of an ohm with the contacts held manually open.

4 - Connect one test lead to G terminal and the other to the B terminal. The ohmmeter should indicate open circuit. Now manually push the cutout relay down (the cutout's the the relay whose contacts are held OPEN by spring pressure). The meter should read ~0 ohms with the cutout contacts held manually closed.

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Note: It's possible your regulator has only 3 terminals (ie. the L is missing). If so simply connect the ”orphaned” wiring harness L wire to the B (or BAT) terminal on the regulator.

Hope this helps...

Replies:

• Re: Help identifying voltage regulator poles Alafarmer 17:35:29 10/09/06 (0)
• Re: Help identifying voltage regulator poles John T 06:48:02 10/06/06 (1)
  • Re: Help identifying voltage regulator poles Bob M 07:36:46 10/06/06 (0)

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