Originally Posted by jrnsr

I was afraid my Jag might've drown in a flood, too, but Carfax said it hadn't, so I took my chances on it. I was dealing with a tiny trickle short in the wiring, pulling the tailight relay in, for a 4A constant drain, killing the battery, but had the advantage of bright brake lights helping me in my search. I pulled every single fuse on the car and they did not go out! Unplugging connectors in the trunk helped isolate my problem to the trunk but by then, the melted insulation was evident.

First, see if the little door on the ignition switch is closing, it energizes a lot of devices in preparation for switching the car on. Maybe a shot of WD40 will end that mystery. Everytime I inserted or removed the key, the little door shut off and turned on my brake lights, driving me nuts because there's nothing turning those lights on and off except the brake switch. Even disconnecting the brake switch didn't shut them off. Insane!

Afterwards, I might suggest starting with 12mm socket disconnecting the heavy positive leads on the fuse boxes one at a time to segregate large clumps of hardware quickly. From there, track down connectors and modules to disconnect. Good luck!