My 98 has a bad power connection under the seat,main power no problem.Here is my problem,on the main wire into the plug from the floor to the seat is a brown ground and red power,however there is a 3rd smaller wire. does it hook to the power side of the plug or to the ground? I am going to make my own connectors and need info on that small wire. The plug that it plugs into doesn't have it,so it has to be pos. or neg. any help?