just got an orion 12 xtr pro..installed it in my 5th gen prelude...but theres this annnooyyying rattling coming from somwhere in my trunk. It actually sounds like its coming from the gas tank or underneath my car...but when i open my trunk lid it goes away. Even when i almost close the trunk, the rattling starts again. I put RAAMmat all over my trunk and theres still rattling! anyone have any ideas?! thanks

 

Licence plate? Mine rattles like a mother with only 2 screws in the top. Check the lights, I had to use some clear caulking to hold down my licence plate lights in my old accord, hey it stoped the rattle and you couldn't see it.

 

it sounds like its in your llid somewhere