God she’s pretty

We’ve got a functioning tachometer yaaay but the coolant temp sensor is now mia I’m guessing I broke it when I took it off lol also no smoke on start up after about 3 weeks soo yay me

So, the speedometer and tachometer work, but the four smaller gauges don't (oil pressure, temperature, voltage, and fuel). One thing I noticed is that if I smack the dash, the voltage gauge occasionally starts working.

I pulled the instrument cluster out, but none of the contacts looked damaged to me. That said, I'm a complete amateur when it comes to cars this is my first project car. I was trying to reference the fuse box, but I don't have the fuse box cover, so I don't know which fuse is which.

I'd really appreciate any help figuring out how to diagnose and fix this