hi, i am new to the forum.I have a 1991 ford f150 with the 5.8 engine extended cab.I have had this truck at least 6 years and while just looking over my engine one day i saw this cable about the size of a battery cable tucked neatly down by the firewall on the passenger side of my truck.It is not connected to anything but one end is going up into the truck,but i cant see where.The other end is there with an end on it like it should be connected to a bolt.I am dumb founded,if any body knows what this cable is please let me know...Thanks