I recently discovered an unconnected wire/cable that runs along the floorboard of my 81 D and goes up into the consol along the right-hand side of the driver's seat. It looks a little like a tv cable except the prong is thicker and longer. Can someone tell me what this is for? (Also, underneath the dash I have a frayed wire that comes out of the "white box" to the left of the steering wheel. What is this and should I be overly concerned about it?) Thank you for any help and Merry Christmas, :) Richard