What to do under the dash besides this?

Mike69cuda said

I don’t think anyone repops the evaporators. Mine works fine with R134. I have a completely stock ac system. Don’t believe any of the chatter about having to replace parts of the system. I am not saying newer compressors aren’t more efficient, just that it is not necessary to have a good working ac.

I replaced my dash lights with 3 sided led bulbs that look nice. There are also threads about using led strip lights that look really cool, but I didn’t know that when I did mine.

Definitely read a lot of threads about it. I didn’t know enough when I did mine and will need to do it over at some point. Be sure to solder the connector pins to the circuit board and replace the nuts the ground the circuit board. A pencil eraser cleans up copper traces nicely.

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I not only solder the pins, but i went to lowes and got copper plated steel brads that fit into the pins from the back as a tight slip fit, cut the excess length off so they fit inside the back of the pins flush. Coat with flux, and solder them in, or alternately you can just super glue them in place. This prevents the pins from pulling loose from the back side where the tangs are peened over. Soldering the pins to the copper traces is good, but the brads prevent the pins from coming loose on the circuit board and pulling out when you have to remove the connector. These 2 methods can also repair a pulled out pin. Test check on reinstallation that the pin heads do not contact the instrument cluster housing or a ground short will occur. You can file the domes on the pin heads somewhat flat, and stick some vinyl tape between them and the gage housing if need be.

Add an extra ground wire from your metal instrument cluster directly to a good ground like the lower left side of the dash under the bolt that mounts it into the body. The cluster is grounded thru its screws attaching it into the dash frame, but a good dedicated ground helps a lot to eliminate dash gremlins.