Lionel Ucs

i have several O Ucs tracks I want to rewrite. I don't and will never use the operating function but will use the uncouple function. I want to wire these through push button momentary switches mounted on my control board. Can anyone out there help me figure out what wires I need to run or combine to make the momentary switch work? 

Thanks

Original Post

Screw terminal #1 is common ground, so all you need is a NO(normally open) SPST Off(On) momentary pushbutton switch with its two connections wired (1) to screw terminal #4, and (2)either screw terminal #3(for track power) or your accessory fixed voltage source.

Rob

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