Under the carpeting, in front of the rear seat on the passenger side, there is a connector with five (5) wires...and they corrode!...

Remove the rear seat...run the front passenger seat up towards the front of the car as far as it will go....remove the trim so you can peel up the rear carpeting and in the channel wrapped with tape, you will find the connector. (I think the wires are red). Mine were green with corrision...

I soldered the connections and that solved the problem...

There are posts with photos in this forum...seek and you will find....very helpful.

The Tenor Man