2002 LSR1800 Plug

Howdy, Looking to find out about the plug on the bow of my 1800, factory customer support told me it was for the rear brake lights on my boat.  I am looking to make that a front light for night use just need to figure out how to get the other piece of the plug. Customer service gave me this part number EBG22D for some harness for the rear brake lights.



Thanks for any help.

Jerry