Dash lights problem

[Krex]

Just installed a painless harness in my k20 lwb

I need some help with dash/instrument panel lights not working?

All other lights wiring works as designed. I have not used quite a bit of the harness like power windows, cruise, heater, dome, courtesy lights, I don't know if this could be my problem.

I also plugged in a new headlight switch, first attempt headlights work, tail lights work, hi and lows work, no dash light, so I turned the dimmer on the switch it shorted and small electric smoke and a saw a quick flame. And blew my horn fuse which is connected to the tails,

Using the same headlight switch I replaced the fuse and the horn fuse blew.

I decide not to use the new switch again, replace the fuse got my old headlight oem switch and headlights and tail lights work and don't blew horn fuse.

Any tips, advise, trouble shooting help, tests, etc?

I was thinking about just going to get a another new headlight switch, but I think it may be more than that.

Thanks again for the help -Rex