I found these a while ago under the back seat of my 95 f150 and i have no idea what they go to. The wires go under the carpet behind the seat and i havent pulled it up to see where they go. 3.5mm jack, looks like s video plug, and maybe a power plug?

 

The two angled connectors look like what could be connected to a CD changer unit.

 

CD changer?
Old style cell phone with a glass mount antenna. The power wires could be for the control module.
The white control plug resembles the one I have, and the wire coloring is the same orange and red.
I don't have a 3.5mm jack and my coax connection is slightly different.

 

It had a tape radio not a cd one so i doubt its for a disc changer

 

Back in the old days we had to buy our own changer to integrate to the vehicle.

I had a Pioneer changer that I bought for my truck. I eventually bought an in dash Alpine cd deck and no longer needed the pioneer but these changers were pretty amazing back in the day.

Something like this
https://www.ebay.com/itm/11545292037...3ABFBM4L38qpRh

 

Just checked that out and the spots on the back look exactly like the plugs in my truck so i guess it had a cd changer at one point

 

Jes. Mystery solved. My 1997 Dakota had a factory tape deck but it had a CD button on the face. When I went to the dealer to ask about the CD changer unit, they wanted like $600 for it. Pfft. That's when I replaced the headunit with an aftermarket Pioneer unit, and a Rockford Fosgate amp/subs instead.