yes its is the top left in the pic it goes to a temp/flow sensor on the coolant tank on a Pro model. and no there are no “moving parts” near this connector but with the laser head movement it does send vibrations throughout the machine that we can not see with the covers on. the fact that this harness is 10 inches long and not secured anywhere in the body of the harness allows small vibrations to be magnified by the length of the harness. like a bull whip affect.
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