8 gauge power wire. I use the opus 150 power supply. just wondering when I crank my engine, does the radio acc wire lose power during the crank? because I have the yellow acc wire from the power supply tap into the radio acc instead of ignition switch.on the steering wheel control, are you saying there is only one wire for that controls volume up,down, next track, mode(cd,fm,am,aux)? Or there is a wire to the head unit for each?
or each button has a one resistive wire for each button? thanks. also once I figure this stuff out, is there a how to log or something on how to program with each button?