Hi I been looking in the forum but can't find a wiring diagram for ohmic sensing I buy a Hicon Integra but i need the ohmic to sense and have no idea how to do that i have the hypertherm plug for the ohmic sensor but don't have a ohmic sensor i so some diagrams on line and the show you need 2 relays but don't know how to wire or what exactly do any one that can help will be a lot of help i buy mach4 with the hiconintegra to upgrade my mach3 and is just getting dust thanks