purplesyrup Posted February 3, 2013 Author Report Share Posted February 3, 2013 Where did you pull 12 volt switched power from? Not the harness I hope.... Yes from the harness, I had not ever heard to run the 12v from anywhere else the yellow wire pictured above Link to comment Share on other sites More sharing options...
purplesyrup Posted February 3, 2013 Author Report Share Posted February 3, 2013 ive installed quite a few H/U's and never ran into this problem Link to comment Share on other sites More sharing options...
cloud77 Posted February 3, 2013 Report Share Posted February 3, 2013 It could be a ground/power, or harness compatibility. You may need to run a constant power wire from your fuse box or battery. Just run a constant + from your accessory fuse if available. Do that first and see if it powers on If it doesn't check your wiring in the back make sure all the wires are connected accordingly, make a new ground for the headunit to any part of frame. If this doesnt work, check your wiring with a dmm in and out of harness, as it may be the harness capability itself. You may need a fancy harness What kind of car? Your car has an option of 4,6, or 8 speakers. which do you own? Do these things ^ and then come back 2004 Grand Prix GT (2) 12" RE XXXs (04/05 XBL^2) 5 cu. ft tuned @ 35 Hz MMATS HD4000.05 MMATS SQ4100 Infinity Kappa components Juice Box black cherry Duralast platinum group 34 1/0 KNU OFC, 2/0 welding Singer 250A Link to comment Share on other sites More sharing options...
purplesyrup Posted February 3, 2013 Author Report Share Posted February 3, 2013 speakers in all 4 doors, and 1 tweeter in each pillar, so 6 Link to comment Share on other sites More sharing options...
cloud77 Posted February 3, 2013 Report Share Posted February 3, 2013 You run a power and ground from your battery and it still doesn't work, it will narrow down possibilities. It may be the headunit itself. Is there a fuse in the headunit? 2004 Grand Prix GT (2) 12" RE XXXs (04/05 XBL^2) 5 cu. ft tuned @ 35 Hz MMATS HD4000.05 MMATS SQ4100 Infinity Kappa components Juice Box black cherry Duralast platinum group 34 1/0 KNU OFC, 2/0 welding Singer 250A Link to comment Share on other sites More sharing options...
purplesyrup Posted February 3, 2013 Author Report Share Posted February 3, 2013 yea, fuses on HU are fine Link to comment Share on other sites More sharing options...
cloud77 Posted February 3, 2013 Report Share Posted February 3, 2013 Run a new 12v constant wire straight to the wire coming from the headunit To fuse box or battery +. Sucks that you taped it all up already... 2004 Grand Prix GT (2) 12" RE XXXs (04/05 XBL^2) 5 cu. ft tuned @ 35 Hz MMATS HD4000.05 MMATS SQ4100 Infinity Kappa components Juice Box black cherry Duralast platinum group 34 1/0 KNU OFC, 2/0 welding Singer 250A Link to comment Share on other sites More sharing options...
TheNewbie Posted February 3, 2013 Report Share Posted February 3, 2013 when the :shtf:do as they say.....donate it Just stop. Check out my build log: http://www.stevemead...60#entry1958353 Different folks have different strokes. Link to comment Share on other sites More sharing options...
purplesyrup Posted February 3, 2013 Author Report Share Posted February 3, 2013 Run a new 12v constant wire straight to the wire coming from the headunit To fuse box or battery +. Sucks that you taped it all up already... will do first thing tomorrow, im beat Link to comment Share on other sites More sharing options...
CoritaAlterado Posted February 3, 2013 Report Share Posted February 3, 2013 If you get it working, just a little warning as this happened to me with the same hu a while back...the volume starts off pretty loud, and there's no way to change that. Just to save you the scare lol Link to comment Share on other sites More sharing options...
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