New cluster did not fix the dead Gauge issues HELP

humm I could use my multimeter to test the Wall wart output to verify polarity and voltage output.
Sadly I do not have a garage, just a driveway.

Let me also ask, the Fuse for the dash, that is for all dash lights correct? So if the turn indicators work and the Hi Beam indcator works, then the fuse has to be good, right?
i gotta get the Dash lights working, the ones that illuminate the background.
And the Headlight switch with the Rheostat is new. Other silly question, does the Dome light dim with rheostat or is Dome light just either On or Off?

The dimmer control does two jobs........grounds the dome light switch wire just like the doors do.

It's main job is dimming the dash lights.

I don't get your inst fuse question.

The dimmer RECEIVES power from the tail fuse through the light switch. The dimmer output SENDS power to the inst fuse, and then off to the dash lights. That is the only job of that switch.