alright i got a 600 watt 2 channel and a 300 watt 1 channel, they both have 8 gauge power wires goin to the battery....these amps are just going to subs (3 12"s) so i think thats why my lights are dimming cus the amps are maxing out when the subs are really beatin.....i mean the subs and amps are pretty low power ones but they really beat cus im maxin them out