Hello,

1995 Jeep Cherokee Sport
4.0L

Ok. I started losing power to the windows, gauges, everything electrical, etc. I came home, put a new battery and alternator on. Still reads 9/10 on the dash volt gauge.
At the battery I tested it and get a reading of 12.5 volts.
So I thought it could be the voltage regulator.
Replaced the PCM with two different PCM's and still get the same readings.

Any help would be appreciated...

 

Have you tried "freshening" all of your engine grounds? Can't be ignored for any electrical gremlin. May not change a thing, but takes you a half hour of your time.
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Grounds can be the root cause of many electrical gremlins. Refreshing grounds is NEVER a bad idea, and the investment of your time in this procedure is always well worth it!

You can't tell much of anything by looking at ground connections!! You must remove, scrape, clean until shiny the cable/wire ends and whatever they bolt to. Be sure to remove all paint from any ground connections.

Start with the one on the back corner of the head, and where it attaches to the firewall, as it deteriorates over time and is an area that makes it susceptible to damage. Best to replace that woven cable with a #4 or #2 gauge cable. You can attach the one end to the intake manifold if you would like.

Next go over to the engine dipstick tube stud. Remove the nut and clean the wire ends and scrape the block until shiny at the stud. Reattach tightly.

If you are so inclined, add at least a #6 cable from the negative terminal of your battery to one of the bolts on your radiator support.

 

Did you have the new alternator tested? They have been known to be bad out of the box. just FYI.

 

Check the fuse box under the hood for any blown fuses.