2016 Discovery 4



Connect only approved electrical circuits, which are in good condition, to the vehicle's electrical tow bar socket. Failure to do so may result in damage, or affect the correct operation of the vehicle's electrical systems.

When a trailer's electrical connection is made, the instrument panel's trailer warning indicator flashes, when the vehicle's turn signals are operated. If the trailer warning indicator does not flash, check the trailer's electrical connection. Also check the operation of the trailer's turn signals. See TRAILER TURN SIGNALS (GREEN).

The following information confirms if a trailer, or an LED lighting board, is compatible for use with this vehicle. If these conditions are not met, the vehicle does not detect the electrical connection of a trailer or an LED lighting board.

Function Minimum load Maximum load
Amps Watts Amps Watts
Brake lights. 1.75 21 5 60
Turn signals. 1.75 21 5 60
All side marker lights combined. - - 5 60
Reverse lights. - - 5 60
Fog light. - - 5 60
Permanent battery feed. - - 15 180
Ignition feed. - - 15 180