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Re: [T3] gen/VR trouble

On 16 Dec 2002 at 21:21, Brian wrote:

> no meter, but have test light.  which side of the gen should i check 
> with the test light to see if the gen is charging?

Engine off:

Disconnect the wire from the DF terminal and push it aside so it can't short to 

Engine on:

Use a wrench to short the DF terminal to ground while you place the test light 
between the D+ terminal and ground. As you rev the engine up, the test light 
should get very bright; if you do this too much you will burn out the test 
light. Do this only briefly because it is also hard on the generator and the 
other electrical parts of your car.

This is called "full fielding" the generator. It is not being controlled by the 
VR; it is just full blast ON, so the output voltage is just proportional to 

If things go as described above, the generator is fine and the problem is 
elsewhere. If not, the problem is in the generator. There are lots of simple 
things that can go wrong with the generator that can be easily fixed rather 
than replacing them.

Turn the engine off before reconnecting the DF wire.

Jim Adney
Madison, WI 53711-3054

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