Just had a Sonar 3 band EQ installed in my Jbass the treble high cut pot purchased separate with the Sonar MS 3 switch JMVC 4 FE/M2 pickups Diagram shows a push pull switch for the volume I believe the push pull switch purchased separate is hooked to the volume to activate active / passive mode but no push pull with the high cut. Does this sound right http://www.delano.de/uploads/tx_smtdelano/delano-installation-guide_51.pdf