how do i install an amplifier to my car-95 pontiac bonneville se
400 watt amp
2 8 inch kenwood subs

you need 4 or gauge wire about 17 feet, rca cables, 14 gauge wire about 19 feet in length, and speaker wires prolly 12 gauge. Oh yeah and a fuse holder with a 200 amp fuse.

Bat->4 gauge wire->fuse->4 gauge------>amp (make sure the fuse holder is place under your hood as close to the battery possible.

rca cables from your amp to the back of your head unit (radio)

and the 14 gauge accessory wire will splice into your red wire on the rear of your head unit (radio) or you can tap it into your fuse box with the fuse thats plugged into the power accessories.