This Subwoofer Line Output Harness for Ford Focus is a plug-and-play module that routes a clean RCA signal to an external subwoofer amplifier for 2011–2018 Ford radios.
The harness includes RCA cables, remote wiring, and a signal path designed for aftermarket amps. Only main power and ground connect to the vehicle battery and chassis.
Use it to add a powered subwoofer to your factory system without replacing the radio, preserving existing controls and improving bass response.
- Plug-and-play harness with RCA signal cables to an external amplifier
- Remote turn-on wires included for compatible amps
- Built-in volume dial on the harness (external knob recommended)
- Simple installation: connect battery power and chassis ground to complete the circuit
- Signal wires integrate with Ford Focus radios 2011–2018, including 4.2-inch screen variants
- No factory head-unit changes required; keeps integration straightforward
Optional light specifications: This harness does not include indicator lights or illumination features.
Fit: Ford Focus models with 2011–2018 radios; check your head unit version (4.2-inch screen variants and earlier without MyFordTouch) for compatibility.
