accessory port question??

I have a 1999 4trax that has the accessory port on the rt bars. The port has wires going into the electrical box on the back side but the front side that you can pull out has a pos and neg wires that are routed to the back of the atv but not pluged in anywhere. The guys I bought from had the wires ending in the storage compartment in the rear but not connected to anything. Do these go to the battery or eleswhere??? cannot find it in a maunual and ATV shops are closed today.. Please let me know where these 2 wires go if anyone can help!!