Helloooo, there is an entire manual devoted to the electrical diagrams for each Lexus vehicle.
Wiring diagrams for Lexus vehicles can often be found on the Chilton website -- it's a subscription website but I have access through my local public library website via my library card number. There are many, oh so many, wiring diagrams for each Lexus vehicle.
I checked when I first saw your post and didn't find any wiring diagrams on the Chilton website for your car. Even if I had found them, I wouldn't have been able to download and then upload the 100 or so PDF files that comprise a complete set.
Wiring diagrams are available on the Lexus techinfo website -- $10 for a 24 hour subscription. Or you can buy a hard copy of the wiring diagram manual and the other two repair manuals for your car from a Lexus dealer or an online discount seller like Sewell Lexus or Irontoad.
Or, if you have a specific question about how your car is wired, you could ask it here and someone might respond.
Jim, thanks for the info. I tried to check the Lexus techinfo website https://techinfo.toyota.com/techInfoPortal/...t3/register.asp
but it was very complicated to register. It required me to be a member of Associated Locksmiths of America/NASTF (National Automotive Service Task Force), and thats anohter complication.
However, I just need the wiring diagram of the instrument panel that includes Navigation and A/C systems. The battery of my car has been wired revered. This is has stopped the Instrument Panel (A/C and Navig Systems) from working. It is dead now. I need the diagram to find out the source of wiring from and to that panel. Please help. You could email me at spravo0123@aol.com
Sam