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Tekonsha P3 Brake Controller 90195 to Ford 3035-P wiring adapter plug
This two page pdf is the general instruction for hooking up the Tekonsha part number 3035-P adapter cable between a Tekonsha P3 controller and the existing Land Rover/Ford plug, (called C2590 in the Land Rover wiring diagrams), that is hidden above the brake pedal.

The "Ford" plug, (C2590), is grey and is stuffed up above the brake pedal arm.

Mount the P3 controller appropriately and then connect one end of the custom cable to the P3 and the other to the "hidden" plug.

You will now have power for your trailer electric brakes in the round socket at the rear of your LR3; also no computer update from the Land Rover T4 unit is required. For once, it is plug and play.

If however, your trailer has LED tail lights, you may have trouble with the flashing of the trailer signal lights or non recognition by the 3 that a trailer is connected. As such, the little green trailer signal will not illuminate when a trailer is connected and the signal lights are used. This can affect the shifting of the transmission and much to your annoyance, the backup sensors will still be functioning rather than being auto disabled.
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Tekonsha P3 Brake Controller 90195 to Ford 3035P wiring adapter plug.pdf
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