ok, i have the Bose accoustic sound system in my car. theres a small plug at the left corner of the cars trunk (if your standing at the back of the car) it connects the the Bose sub, and no its not the bose plug. This plug it a smaller, squarish plug and its quite long. could you use this for an amp or somthing? i was wanting to put in 2 subs but i wasnt sure what this was for.

 

come on anyone? please anything will help.

 

take a picture. or search the diagrams