Boat Mate trailer wiring

Hi
I have recently purchased a supra21v with a boat mate trailer. My issues was that the 5 pin conversion did not allow for the Volvo XC90 to go in reverse and disengage the brakes.

My question is what is the color scheme.

There are 3 blue, 1 white, 1 yellow, 1 green, 1 green and brown, and 1 yellow and brown.

I was wondering what they all are and in what position they go.


1 Parking lamps

2 Charging

3 Right indicators

4 Electrical brake

5 Ground

6 Left indicators

7 Reserve



The above are the 7 positions in the 7 pin attachment. Please let me know what color wire goes to what pin.



Thanks George