Wago Block
If you are going to use an existing switch on your panel to turn on the circuit for your instrument, then it's pretty easy. Your owner's manual will point you in the general direction where various wires are on the WAGO block. Turn off all switches on the panel except the one you plan to use. Use a multimeter with the neg. probe attached to any ground wire on the WAGO block, and search around with the pos. probe for the circuit. Once found, attach the pos. wire from your electronics there and your neg. wire to ground on the block. This will complete your circuit.
