HIGH INPUT L and R terminals.
NOTE: Be sure you connect the + and - terminal correctly.
2.If the stereo system has only three wires, connect the common speaker wires to both of the amplifier's L and R negative terminals.
3.Connect the left speaker's positive (+) wire to the amplifier's
(+)left terminal.
4.Connect the left speaker's negative
5.Repeat Steps 3 and 4 to connect the right speaker to the amplifier's right speaker terminal.