$20 bucks at your local autoparts store, get the amplified ones that hide away and just hook to your radio no other wires run to your batter just the back of the radio, unhook the old antana after its down in its slot, no worries from there, no one can break the antana and nothing ugly since the amplified antana sticks to the inside window and if you have a sun tint on the top of your front window then your set! Oh, and I think that guy craping a load on ya, antana yeahright, its probably your alarm, sometimes if something was not hooked up right it can ground out somewhere and cause a fuse to blow, figured that out with my headlights, fixed that problem fast though, fuses get expensive, and I just hate to waste a perfectly good fuse, lol!