does anyone have a rear window switch for a 90 4runner laying around who would like to get some extra $$$$ ?

 

Are you sure it is the switch? There are a couple different relays that could be the problem.
I just farmered the "tailgate closed" detector relay on my '85 since there was enough wear in the assembly that it could no longer detect that the tailgate was actually closed. I drilled out the post on the relay and added a tiny screw to make the post longer so when it rode on the cam shaped lock mechanism it would activate the relay and allow the window to be rolled up and down by the switch again.
What mine really needs is to have the whole latch assembly on that side replaced, or alternately, run a bead of weld down the end of the worn lock assembly so the lock mechanism will rotate more and the relay will ride up the lobe higher.
I'll leave that for the next guy though since I'm going to be selling it

 

Check it out good before replacing the switch - the rear wiper has to be completely up for the window to function - I found this out the hard way !
Also check to make sure that the window lock switch is not turned on preventing the rear window switch from functioning.

 

yes I checked everything else so I pulled the switch and had it checked. it goes up but it dont come down

 

still looking for a switch. Does anyone know if an 88 will fit the 90? please help me

 

i doubt it. my buddy has an '88 with a broken switch and every junk yard we have gone to gave us a switch that appeared to fit, but it didn't operate the window. my guess is that the wiring is different between the first and second gens. you may want to check out roger brown's page (www.4crawler.com). in the toy4x4 section he has a whole page dedicated to the rear window. it may help you out - especially the wiring diagrams for the 1st and 2nd gens

 

I called a dealer and they said that the 89 through 91 will fit. I hate when they change things that aren't broke.