sonic impact class t amp

If you look at the top of the board, at the plastic connector that houses the wires that lead to the pot, you will see letters designating the wires' function: V + R L G L R

The G is ground and should connect to both left and right grounds on your new pot or to RCA jacks. The R L, between the G and + go to the left and right positive inputs on the jacks. At this point, L R are no longer used. V + go to the power switch.

You can find a schematic for the amp here: