i cant seem to find a good grounding location for my amp in my trunk. i have a 2000 mustang so if anyone else has figured this out please let me know. with the wire they gave me i only have about 3 feet so not too many options

 

I just used a self tapping screw, and sanded around the area to get a good connection to the metal. Just make sure you check underneath in the area to make sure nothing is there.

 

where abouts in the trunk is your amp? make sure you check on the other side of what ever you are tapping a screw into. Grounding your amp to your gas tank will not help the sound, or milage......

 

thanks guys... i was tryin to find an already existing screw but i went with a self tapping one and it worked awsome
thanks a lot