I'm gonna be putting two amps in the trunk of a 97' mark... where you suggest grounding them... I was gonna use the factory ground but thought maybe there's an easier/better place... thanks again... and again... and again..

Use a pretty heavy gauge, 8 is nice. Find the shortest route to solid metal, sand clean, drill pilot hole, and screw. Voila':D

yeah I have 4 gauge for the amps and 8 for the grounds... but where's a good place?... I'm gonna put a ground terminal and don't want it being in the way or not being a good ground

i had a 2500 4 channel grounded under the spair tire there was a hole under it that bolted right up, great spot out of the way great ground

There are a few easy spots in the trunk.


Sand some paint away from where the shocks bolt down, and use that space.
Use the location where the rear passenger bench bolts on.
Sand some paint from where the tail light bolts on.

I grounded to one of the top bolts for the shock mount.

Ideally you always want to use a common ground used by the car, if you dont you can generate interference. Audio install 101.

If you stand at the trunk and pull off the black plastic lip lining that runs the opening of the trunk and pull back the carpet you will see a factory ground point. There are lots of connections there, you may need a longer bolt if you have more than one connection to add there.

Thats really the best common ground on that end of the car you can use.

Also, it's recommended that you use the same size wire for your power as your ground. You can't expect good electrical flow if the ground wire is smaller than the power.

Think of it as plumbing, starting with a 1/2" pipe and reducing down to a 1/4" and then back to a 1/2", the 1/4" is going to restrict the flow of the water.

I would create my own grounding point, I pulled the carpet back away from the trunk floor, behind the back seat, sanded to bare metal, drilled a pilot and screwed my own screw, just make sure not to drill through any wiring or lines on the underneath side of the car.

Remember, keep your ground wire as short as you possibly can, figure out where you're mounting your amps and find a point close to the amps. I try to keep my ground wires under 2 foot long. Shorter wire equals less resistance, better electrical flow.

Yeah... I'm actually running 4 gauge to a distribution box then 8 gauge to the amps... and then 8 gauge for the grounds... should be enough... not really running that many watts... maybe like 800... but should sound good... I'm hopin at least :D

Yeah... I'm actually running 4 gauge to a distribution box then 8 gauge to the amps... and then 8 gauge for the grounds... should be enough... not really running that many watts... maybe like 800... but should sound good... I'm hopin at least :D

You should be fine then.

in my last car I used one of the seatbelt bolts

http://www.cardomain.com/ride/2229136

Yeah I"ve done that in the past but I didn't like the look of a wire coming from it... I'm thinkin I'm gonna run it to the grounds under the carpet... run a 8 gauge to a spitter (ground distributer) maybe mount everything on a piece of Masonite... make it easier to move and harder for things to shift around