Don't know where to start 2003 s10

[D.reynolds]

I was trying to install a new aftermarket radio and as I was figuring out which wires where which my constant orange wire touch my ground wire and ever since then my prnd321 and speedometer gas and temp isn't working anymore and some bulbs went out and now the power to the illumination in my fuse box went out even when I change the fuse (2003 s10 2.2 auto extended cab)

[Niners 365]

Did you check all the associated fuses? Cluster, Aux, and others. remember to check in the dash fuses and under hood. Cluster fuse would be for your speedometer and gas gages etc.