Two wires go to the vacuum switch that enables/disables the electric shift power. My harness was rotted and one of the wires I could<br />not figure where it should go. I know one wire is right that goes to the shifter switches up front but, should the other wire go to B+ or should it go to the IGN hot wire? I have no diagram for a 1968 model engine.....any ideas??<br /><br />PS...also, is the rubber diaphram available at OMC for this vacuum sw. or do you have to buy the whole sw. ?? mine is rotted........<br /><br />Thanks