My TJ is a 2002 model. I have the factory service manual with schematics. I'm a retired electronics circuit design engineer. My TJ came from the factory with relays for all of the front lighting circuits installed inside the fuse/relay box under the hood on the driver's side. When the fog light problem first occurred, and drained my battery, I pulled the relay. This prevented the fog lights from coming on but still drew a small current for the relay coil. I repaired the lever by filling the hole worn in the plastic lever with JB Weld. If you have added additional lights to the circuit, make sure the lights are controlled by the relay contacts and not directly by the multi-function switch on the steering column. A defective fog light relay could potentially cause over heating in the multi-function switch.