wire it to a switch.....and when you do wire it up just ground the wires to metal. The positive wire try to make them into one wire, which means your going to need to connect them. Here is the order for wiring the strobes with a switch....
Strobes-Positive wires-switch-fuse *corner bulb fuse*.
Strobes-Positive wires-switch-fuse *corner bulb fuse*.