I'm not all that knowledgeable when it comes to this stuff, but i thought i would give it a shot anyway. I have a 10 inch pioneer subwoofer and jl 500/1 amp that i would like to add in my wrangler. i have power going to the amp, but i cant get any sound from the sub. im fairly certain i have it wired correctly, but i cant guarantee it. any suggestions on what i should look for?