1986 Nissan 720 clicking under passenger side dash and squealing alternator

[builte]

Recently replaced old burnt up alternator now I am getting a very subtle squealing sound while idling and every now and then it will squeal loudly while there is a clicking sound under the passenger side dash I tested the battery and alternator battery is good and alternator is charging. 

[datzenmike]

If you mean the red charge light is out means it's charging, yes and no. It may only just barely be charging. Got a meter? over 14v would be charging. Clicking is the choke heater relay. This is almost always a poorly charging alternator.

 

Replacement alternators are often 'bad in the box' they are mostly crap and why they have a free replacement policy They keep replacing till a 'good'' one happens by. Their idea of rebuilding is cleaning and testing them and put in a new box. If the bearing(s) was/were replaced they are inferior and likely the source of the squealing. A Nissan Alternator is near $400 so you get what you pay for.

[builte]

Very helpful thank you 

[builte]

So the battery needs to read 14v while running?

[datzenmike]

Well preferably over 14v. Pull the headlight switch and see. Under load it should as well.

[builte]

Ok thank you I appreciate it and by switch do you mean relay

[builte]

I tested batter while it was running it's 12v and something so we're all the fusable links and I tested with the lights on