[my427cobra]

Thanks for everyone's help. Here are my trouble shooting results so far:

1) using patrickt's process, at the F to A connections on the regulator I have 12v there.

2) will start the engine later today to test for 14v there

3) using the ERA process:
I have no needle movement on my ammeter when I turn my lights and/or on. Lights and fans all run strong. Battery is good.
At the A to Ground at the regulator I have 12v.

4) using diverrick's process, I need to check for 12v at the F terminal on the back of the alternator. To do this I have to move the heater hoses, and remove the alt from it's brackets as the comnnections on the back of the alt all have rubber caps on them and are very close to the cyl head.
I'll do this later today.

So I may have a bad ammeter - no needle movement with lights or fans running. I'll have to rig up a bench test.

Results later.

Cheers
Greg

Resu