I did our 2002 Friendship. The brake controller wires into the under-dash for all but one wire (Blue). I'd guess you'll have to run a blue wire from the controller to the 7-pin (full length) and move/adapter the lighting from the 4-pin to the 7-pin. The controller instructions are fairly clear. It is more pain than technically difficult.
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2002 Friendship
Full timing from Washington State
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