1990 frame sensor

[rufcar]

I have that silly info and seat belt light problem. I read all the articles and so did my mechanic friend who after he did my AC I had him do that, He tried to cancel it out with the jumper wire dozens of times. He even tried using the OBD1 scan tool . Today a bought a NOS one on ebay. Without hunting does anyone know where the plug is on the passenger inside after it goes through the fire wall? Tkx Jim F