Instrument panel not working?

Fuse for the subs? Stock subs and amp or aftermarket? Not sure if the higher end Mach stereos came with an amp and subs. If it was an aftermarket amp,where did you have the +Positive wire connected to? And how much power is this amp rated for? Confused just as you are about the gauges reading like that.Just trying to figure out how this all went down. Did you mess with any wiring around the dash fuse panel? And last question...do your lights seem dim as if there is insufficient power going to them?