Very weired problem PLEASE HELP

[vlad_xp]

Hello everyone I have the weirdest problem ever

My car : pontiac sunfire 1999 4 dr

My deck : Alpine CDE9872

I got the wire color schematic from google

http://www.installdr.com/InstallDocs/GM/PDF/460025.pdf

I suppose I connected all the wires correctly and now the deck works fine untill i turn my headlights on : the deck is still on but the sound from the speakers is gone! when I turn the headlights back off the sound comes back... I never had this problem in my 2 previous cars.. Is it the ground that is messed up??

Any advice would be apprciated...

P.S. Also I have two Alpine s-type speakers in the back that were very bassy before and now they sound like crap in this car no base at all compared to what they were in my previous car.. is there a specific way you should install them so there is a lot of base?? are they supposed to be like really tight or something?? any advice would be greatly appreciated.

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[sexiewasd 10+ year member]

I would check too things. Check that the headlight dimmer wire shown in the chart is in the right place, and check the voltage to the power wire with the headlights on.

 

[vlad_xp]

okay ill do that thanks for the advice what about my base is there any advice on that ??? and is there really a difference when you connect the + to the - when it comes to speakers ??

thanks everybody