Help with kill switch

I have the the hornblasters shocker kit and it has the viair gray relay with everything built in. Everything is straight forward wiring. The kit also came with a toggle switch with 2 black wires , I want this to turn on off compressor. Can someone please tell me where I put this without being technical. Maybe draw a diagram


Welcome to the forum.

Here is the Viair wiring diagram. Just add the toggle switch after the pressure switch, before the power source.