electrical on 1992 Lexus LS400

in my 92 ls400 the electric door locks, power seat, cig lighter and ac doesnt work. any suggestions on where to start looking for problems ?

You have more than 1 issue, as I am sure that you know, so the best thing to do is to start with the electrical wiring diagram for each system and start testing the circuits and components. As for the AC, you will need an AC Diagnosis. here is a site for the wiring diagrams.

and here are some shops to help you
could the climate control box be bad and keep the ac from working??
door lock problem solved (duh) no fuse in it.
2 more answers
take it to a toyota or lexus mechanic
check your fuses, my man.