Exciter wire relay or fuse

[Ryanturner]

hello,
I replaced my alternator and battery because my charging system was not working. After messing with this for a while and tracing all the lines and making sure they are all good. The only thing I can not figure out is what relay or fuse turns on the exciter wire to change the voltage in for the alternator.
When I rev the engine the alternator puts out more juice. Idle at .8 volts and goes up with Rpms. So I think the ecu is not tell the alternator what voltage to put out.
Thanks!

 

[nissanh]

What do you mean by the exciter wire? Is this the sense wire?
Is your alternator refurbished or OEM?
0.8 V at idle means something wrong with the alternator voltage regulator. How much voltage does it give out say at 1200 RPM?

 

[Ryanturner]

Voltage goes to 1.5
Reason I think I blew a relay or something. This is my second alternator in the this month. First one blew the my 140amp fuse and there was some major wrong with it.

 

[Ryanturner]

Pulled the alternator and had it tested by an Alternator rebuilding company. They said there is nothing wrong with it.
That leaves the 3 pin connector. I tested all those wires over to the fuse panel and they are all fine.