I want to know whats the best Place to ground amplifiers in the Trunk? I have a 4 gauge power wire coming in, do i need a distrubution block 4gauge and 2 8 gauge ground wires in my trunk to properly ground it?


I am getting whine from the speakres , i am positive its a bad ground some where.

And whats a good place for radio deck ground, its grounded in the dash consule and i am sure that could also be a bad ground.


Thanks.

And the capacitor needs to be grounded, but should i ground the amplifier to the capacitor negative?


I hope i didnt confuse ya all

 

doesnt really matter just find a bolt connected to the chassis

 

Usually when I chosing a ground spot in the trunk I make a my own by using a self-tapping screw w/ a washer. First I will prep the area with rubbing alcohol then use a grinder to get down to the metal. Then just use a powerscrew driver and your done.

The radio in the front is a different story. I never use the stock ground because it was designated for the stock radio and not a powerful after market one. The best choice is to run a ground from the stock radio straight to the ground on your battery. Some people don't feel comfortable drilling a hole through their firewall so another option would be under the shifter there are four screws that hold in your shifter I will sometimes use one of those, make sure you clean the area with rubbing alchohol before hand.

Hope this helps

 

or any big piece of metal*

 

The "stock ground" is non existant for the HU. Meaning there isnt wire present in the harness at all. The factory radio uses a floating ground through the chassis.


SKYRockerr...Directly below the radio theres a bracket with a 10mm bolt on each side. Either will work fine for a ground.

--Don

 

Pearl96, this is true that 95 and up do not have factory grounds on the wire harness, but for previous year models like a 90 I believe did offer factory grounds.

 

for whine, make sure your power and audio/rca cables do not run near each other. Main power should go directly to battery. For a better ground, just try to find bare metal, best if using an existing bolt. Or scratch off paint where ground touches.

since when do capacitors get grounded? I had power run to cap and cap to amp.

 

My Rockford Fosgate Digital Cap, has a positive in coming on a 8 gauge split from 4 gauge , then the negative is grounded to the car.

 

you're right, I was trying to picture in my mind the wiring I did 5 years ago. the car and booming system belong to my sister now. I ran i think 8 awg to a distributor block. then (2 wires out) 8 to the cap and 8 to the amp. I grounded both the amp and cap with 8awg to a bolt above wheel well. (scratched off the paint for a good ground.