Car had a partial rewire, the old center light was working but when they took it out it split in half. Now I have a replacement light but the connections might have been changed when the mechanic rewired some things. I know it has 2 rear spades near the prong, and one in the front. My wiring has to prongs together on the front prong and one on the rear with a open prong. I know it is 3 connections, but pulled the light not and cant find a 3rd wire. I can take a picture to show you guys what I am talking about

Look at the wiring schematic for your model year.

Teach a man to fish...

Thought it would be easy enough for someone to pop the seat light out and take a pic.

Had same issue and to quote Jeff I fished them out with a piece of wire.
Try fitting an LED festoon lamp makes a world of difference.

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should not be hard to figure out. the light is ON.... OFF.... or switched (2 wires, one from each door).

Off does not have a wire. look closely at the light fixture switch and choose a connection, and test it.

Use a VOM to check which wire at the light has continuity with your door switches.

16 is the light, 83 is a ground, 33 door switches, #64 12v on. #63 ground.

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Thanks guys, I ripped out the seats and got it all fixed. Only works on the center position and now does not work when the door opens. I think that is the door pin that activates it. Only turns on in the always on up switch, but happy I got it to work. Posting what I did today with my new to me interior in another thread.