This harness is used to wire an aftermarket radio to your Acura TL. When adding an aftermarket radio to your vehicle you will need the standard 20 pin connector/harness in addition to this harness.
This harness includes the needed 68ohm resistor to keep your navigation working with an aftermarket radio. It also includes the amp turn on wire needed to power on your factory amp, this wire will need to be connected to the blue wire from your aftermarket radio. Then it contains a single RCA to connect to the subwoofer out of your aftermarket radio. Note most aftermarket radios offer dual sub outputs but the TL only has one subwoofer.
THIS HARNESS IS PLUG AND PLAY NO SPLICING OR WIRING TAPPING WIRES FROM YOUR VEHICLE!!