What are these cables for?

[Aeneiad]

I pulled my driver's seat out to replace the gear and discovered a giant plug under the seat. I tried to trace the wire but didn't want to pull the carpet all the way up and I think it goes to a box that a CAT 5 style cable plugs into. Are these cables remnants of a HAM radio system?

 

[ppc]

If you have a LX450 it is most likely the connectors for the OEM cell phone.

 

[Aeneiad]

I should have mentioned, it's a 1997 Land Cruiser.

 

[desmocruiser]

Looks like cell phone wiring to me!