A 10 or 12-gauge wire from the amplifier is the best way to ground your car stereo components. The negative terminal on the cars battery is the best source of ground.
Where does the amplifier ground wire go?
First, scout out an ideal location for your grounding point that is within 18” of the amplifier itself (the shorter the length or distance the better). For the most solid connection, it is highly recommended to attach the ground wire with screws or metal nuts directly to the metal chassis of your vehicle.
What can I use as a ground wire?
Bare Copper Bare copper is one of the more common types of copper wire that is used for grounding. Bare copper is sometimes just called grounding wire.
Can a ground wire be bare?
Contractors can use both bare and insulated wire for grounding purposes.
How long can a amp ground wire be?
18 long The recommended way to ground your amplifiers is to keep your ground cable less than 18 long, the same exact size/gauge as the power cable, bolted directly to a solid, thick steel part of the chassis which is scraped and polished clean of any paint or primer for best possible grounding.
Can you connect 2 amplifiers?
The short answer is that you can use any number or combination of power amps in a car audio setup as long as you wire them in properly. The most common reason to wire in multiple amps is to have one for your main speakers and a second amplifier for a subwoofer.
Should ground wire be covered?
It is a good idea to bury an exposed grounding electrode conductor in order to keep it out of harms way, but there is nothing in the NEC requiring a certain burial depth for the grounding electrode conductor.