Mike wireing help

[Grogan]

I have an Magnum S45HP and was going to wire in a Shure mic and a mixer, The 4 pin uses a standard 4 pin cobra Mic, when I make my switch box do I wire it with a DPDT momentary switch like cobra mics use. or can I just break the audio from the mic with a momentary SPST momentary on the audio lead.
Please help here is needed.... Thanks!