Expert Answers about Wiring
How To Convert a 4-way to 5-way for Boat Trailer with Surge Brakes Towed by 2002 Land Rover- The reason your boat has a 5-way is because of the reverse lockout solenoid that is on your trailer. The fifth pin will attach to the reverse light circuit so that when you put your 2002 Land Rover Range Rover into reverse the solenoid will prevent the trailer surge brakes from activating so that you will be able to reverse your trailer without your trailer brakes from locking up.
You could cut off the 4-way on your adapter that you have and then install a 5-Flat Vehicle End 72 inch Wiring Ha
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