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Wow, that stinks. Tracing through the electrical system to find damage, especially from mice is a seriously tough job, even for pro mechanics. It's no surprise that plenty of cars get totalled out by insurance carriers for that reason! I don't have any experience with the second-gen cars, but in the case of the first-gen cars (up to '94), I bought mine in non-running condition, and eventually fixed it. There's multiple wiring looms that run inside the fenders (behind the fender liner) from the engine compartment (and the power distribution points under the hood) to the passenger compartment. Most of those in my case were on the driver's side. I'm not a tech and I had another LS400 at the time I bought my current car, so I was able to dig into things in spare time. I fiddled with things on and off for the better part of a year before getting the car up and running (thankfully not a rodent issue with mine, but with a loose connection under the dash, between the fush/junction block and the dashboard wiring harnesses). 1993 and 1994 cars had issues with backlighting on the instrument clusters, which can be repaired by replacing some capacitors on the circuit board. I have no knowledge of whether this is an issue on '95-on cars. I suppose it's possible that connections weren't put back together properly when the techs dug through the wiring harnesses, trying to find and repair the breaks. Perhaps there's more damage? Fingers crossed that the solution is a fairly simple one. Best, Paul