Ground in trunk?

[JAL232 10+ year member]

Where is the best placce to ground the power wire in your trunk..my first install..any help would be great..or where does the power ground go to...thanks

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[mtdewelf 10+ year member]

I usually use a seatbelt bolt. sanded down to metal.

 

[Another Device 10+ year member]

You could also sand down some metal in your trunk and bolt it down there.

 

[JAL232 10+ year member]

Okay..good..any other helpfull hints...how is drilling thru firewall of car? where is the best place?

 

[blackgeltabs 5,000+ posts]

I usually buy a small self tapping bolt and go right the the floor my my trunk. Just make sure you sand the paint off. The bolt only needs to be 1/2 inch or so.

What kind of car?

 

[Another Device 10+ year member]

I would drill a hole under your dash near the door on whichever side your battery on. You could also see if there is a rubber grommet under there and run the wire through it instead. If you drill, make sure to put a grommet or something like that around the hole to make sure your wire doesn't get cut.

 

[terminal206 10+ year member]

Drilling through the firewall isn't bad, just buy a "stepper?" (that's what I call it) bit and you will be fine. I usually drill as close to the floor as I can safely go preferably behind a kick panel or some other interior piece. Keeping things clean is the key to a good install, you don't want it to look like you don't care about your setup.

 

[mtdewelf 10+ year member]

If you spend some time looking you probably won't have to even drill.

what car? X2

 

[JAL232 10+ year member]

Yeah thats my goal is clean as possible,,,How big of a bit shoudl i need..Im running 4 gauge...So drill the hole behind the carpet...run under to rear of car...do youthink ill have to drill thru to trunk...??/ Its a 99 grand prix gtp 2 door...red..with black tint windows...its nice..

 

[Pyro_By_Nature 5,000+ posts]

You do not "ground" your power wire, unless you want loooooooots of sparks.

 

[JAL232 10+ year member]

I know i connect to amp..then run ground off of that correct?

 

[blackgeltabs 5,000+ posts]

off of the amp yes. battery to + on map then - to ground off the amp

 

[JAL232 10+ year member]

so wire from battery + to amp +....Then run amp - to trunk ground?

 

[matt_martin87 10+ year member]

yes

 

[BoomBoomBoy 10+ year member]

Where is the best placce to ground the power wire in your trunk..my first install..any help would be great..or where does the power ground go to...thanks

All the metal on your car is a ground plane. As long as the mechanical connection is clean and sound, any place will do. Kind of think of any metal on your car as the negative post of your battery.