I just recently got a head unit form a friend and installed it into my integra. its a pioneer deh-3000 i think. well first of all i did a quick *** job installing it.So prolly the ghetta job i did. But the thing is when i was done with the install, at night when i put my lights on the dash light wouldnt come on. So i messed around with the fuses and got the dashlight to go back on, but then noticed one of my taillights went out aswell. Ok well before then, the head unit, amp, and sub were all working just fine, with just little dims of the HU when the bass hit.But Now nothing works at all.Head unit isnt getting any power, and the amp and subs 2. So was wondering if anyone could help me out at all. Either with like wiring diagram or whatever.Just weirds me out cause everything was working before, but not now. I checked the fuse on the HU, fuse under hood going to the battery, and ground wire is still attached. Im thinking it might be like a the casing on one of the wires running through the car got messed up somehow.Just dont know, and wouldnt like to have to start all over again from scratch. ANY HELP WOULD BE GREAT!!!!!

Thanks Guys!!!!!!!!!!!!

 

my guess is you grounded the radio to the Illum wire. IIRC this shows ground at rest and 12V when the lights are on. With the info you gave this would make sense... with the fuse blow it would ground via the dash lights and such (Shitty ground).. but work... and when you changed the fuse it would still work... but when you turn the lights on since the wire now goes to +12 instead of ground, your radio will not work.