i am going to get another amp, i am still deicding wether to get a 800watt pioneer amp to power my 2x12 400watt u.s audio subs. i already have a 300 watt pioneer amp, which will be used to power the rear speakers, but how would i connect the 300 watt amp

i just wired up my 2nd amp the other day.. u'll have the 2 sets of rca's, one remote wire from the h/u.... then go to a car audio place or even ****smiths has the gear.. u need a power distributor (fuse?) block... it puts in ur main power supply wire and has 2 outs... with fuses then for the 2 outs... i think 30A fuses go in from memory.... so from that block u got 2 power outs that go one to each amp... u piggy back the remote wire from 1 amp to the other, the rca set for each amp and then i earthed both separately but to the same spot... and thats basically it... not real hard.. :P