I'd try and get a wiring diagram for each of the models and then you can compare the wiring! I think it was around 91/92 that alot of the wiring changed in specific areas. Not sure which. For $13 + shipping, from toyota you can get detailed wiring diagrams for specific years and models! Call 1-800-622-2033 to get them if interested! You can get the FSM's from this # too!
