I have a 85 4runner and the dome light and cargo light (deck light) were taken out of the truck before I owned it. So I need to replace them with an aftermarket or a used one. My qusetion is: is there good aftermaket interior light or should I find a used one? And are the 84-89 interchangable with newer vehicle (90 and up) dome lights?

 

you talking about the whole unit or just a replacement bulb?

 

Probably best to grab a used part from a junkyard:
- http://www.car-part.com/

Likely anything from 84-89 4Runner should work:

 

Ok thanks! I knew you would come through 4Crawler.