Does your emergency brake handle get hot? If your ground cable is bad at the frame, it will use the ebrake cble /handle assy as ground.

 

On my 97, the starter ground was severely corroded when I first bought it about 5 years ago. It would strand me at the worst times and places.

If your cables need replacing, you should contact one of our fellow members screenname Antichrist, (Ton Rowe). He makes the finest power and ground cables available for a Discovery.