11. The PS-5001 paddle shift option is wireless, but it still needs power, which is hijacked from the factory horn button. The power from the horn will now feed the paddle shifter circuit board through a small three-wire harness added at the wheel hub. The horn will now be controlled wirelessly through the transmitter. The black harness on the right will attach to the wireless receiver (mounted under the dash) and run to the GSM-5000 under the driver seat.