Hi AVB, the modules we are playing with are only single terminal so I assume they are negative earth. In the diagram it shows cutting the wire and therefore isolating the points/condenser, but with what I have been working on to cut that wire involves removing the flywheel, that involves drilling and tapping the flywheel to fit the puller. I tried just cutting the kill switch wire and connecting the module to that wire and it works fine. I have done several like that now and they work perfectly
