Sea-Dog 2/0 AWG Black Battery Cable - 200' [8021013] Entertainment | Speakers - Tower/Soundbars You can also use this

You can also use this hefty little block to combine the ground wires of four (4) sources to a single grounding point

scouring bare metal

05" x Depth 2

SPST - Normally Open

Tare weight

Sea-Dog 2/0 AWG Black Battery Cable - 200' [8021013] Entertainment | Speakers - Tower/Soundbars You can also use this2 0 AWG Black Battery Cable 200' Tinned Copper Stranded Wire. Battery Cable is available in all colors in accordance with ABYC standard. 600V 105C DRY (75C WET) and oil resistant. UL Listed Boat Cable. Made in the U. S. A. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov. Specifications: Color: Black