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ok, i took a lot of ppl's advice in buying roofing material instead of fatmat or dynamat, it got rid of the rattle of the trunk. I spent like 20$ to make like 7 layers (maybe that was overdoing it, but it was so cheap!) sticking the asphault layer on my trunk lid. now, when i stand OUTSIDE, i can still hear somethign inside my rear headlights rattling, but in some music w/ tons of bass, i can hear the rattle from inside the car.

so, should i:
dampen the headlight wires somehow?
or
filter the sound from coming into the car?

i'm still not sure what makes the rattle, when the trunk is open, the lights dont' rattle. anyone w/ similar experience?

 
Rep Power: 469

is it like a squeaking sound or something because i know when i had mine turned up it made this lil squesaking rattling sound and one of the lil Hex nuts that hold the tail light together was coming loose!!! maybe check that see if that's it!!! Also roofing material? explain plz..interested!!!

 
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it might be from where your bumper and the section it touches meets... thats the area where mine rattles and i have yet to figure out how to stop it...

 
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you have to take off the bumper and spray a hefty bunch of layers of rubberized undercoating. tha stuff help out with that and it helps with road noise

 
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it could be the bumper, i got the car used, and it looks like the bumper has hit something big before, but only one side is hanging off a little. where can i get the rubberized undercoating? like home depot?

 
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walmart.

theres cheap stuff for 2.50 or so a can and theres the stuff made by 3m thats like 4 a can.

the 3m stuff has more density to it