- Secure the batt where you want it to go.
- Connect 1/0 awg cable from + under hood to + on rear batt.
- Connect 1/0 awg cable from - under hood to vehicle chassis or - on rear batt.
The HDC3 15" will perform well in 4-4.5 cubes after woofer and port displacement. Tune between 35 & 40Hz. Shoot for 16 sq inches of port per cubic foot.