I'm now putting the finishing touches on my sub box... I'm also putting an amp in the trunk that needs to be grounded... Before I go and start tearing and lifting through the carpet in the trunk can someone tell me where the closest grounding point (i.e. some screw i can take advantage of) in there is? Thanks

 

Yes under your back seat there is a bracket held down but (2) #45 torx bit screws perfect grounding spot.....thats what I did.

 

Under the back seat? Anything actually in the trunk. My wire isnt too long

 

My ground wire is 18". As far as actually in the trunk, I didn't look because I wanted a stealth install. I discovered this when I pulled my whole interior out to run the power wire for the remote turn on and the Sat radio antenna. plus power wire install 4ga.