I have a 2 wire elec plug unattached under the drivers seat? Is this the power for the factory sub? If so is all the other wiring there so I could add a sub without tearing apart the dash?
Offhand I would think it would be for the power drivers seat or heated seat options. I think the sub goes under the passengers seat, I know some of the board members have one so they may be able to tell you what connectors to look for and where.