Help I need wiring info! missing stock subwoofer??

[booty74]

Hello! Im super new here. I have been researching this for a week and no help yet so i figured i would post. OK that being said i bought a 05 sport trac with an adrenlin package and it has the pioneer HU 6 cd disc etc. and Amp in the back of driver rear seat. i was cleaning it out one day and noticed a cut in the floor towards the back under the seat and saw some wires barely poking out. I pulled them out and found that there where four all differnt colors. i followed them to the amp. So asking around some friends said that they think it use to have a fatory 8inch subwoofer in it and was tooken out when they traded it in. I just want to hook up another one if i can or maybe an aftermarket sub but i dont know what the wires are for and if that would work. It has an amp wh wouldnt it power a small subwoofer . i listed below what the wires have on it. thanks!!


orange with red stripe
pink with green stripe
blue with orange stripe
tan withlight blue stripe