the fuse int he wire keeps you from blowing the amp, its a safety thing that you could skip but why? The wiring kits only cost about 20-40 bucks depending on the power output of the amp, you can buy them at walmart, bestbuy, etc.
10-12 gauge is a good wire to use, but again why not just buy the wiring kit?
2003 Redfire V6,
Show: Smoked everything, cobra front bumper, gt rear bumper, rear decklid and lower valence blackout with black mustang letters, 5% rear front 15%, black 98 Cobra rims front, 95 Cobra R rear black with chrome lip, black scoops and spoiler and exhaust tips
Go: CAI, True Duals with flowmaster super 44's, Bama Tune, full suspension (lowered, 8.8, 4.10s, UCA, LCA, springs, CC plates)