Here is how to use the CS-IRKITCCUS Come of of your 12V power supply with the Negative into the "Common" port of the CS-IRKITCCUS (take the Positive directly to the Amp), come out of the "A" port on the CS-IRKITCCUS into the Negative of the Amp. Teach the "A" close and "B"close commands to the CS-IRKITCCUS and you are ready to go.
Eveytime you want the amp on send the "A" command and when you want the Amp off send the "B" close command.