P-lead hook-up to bendix mag

I am hooking up the p-leads to my 0-290d2 and I cant seem to find the correct connector to plug onto the end of the noise filter. It looks like it takes a twist lock type connection but I cant seem to locate a suitable connector. The filter wire screws into the mag with a short lead, The mag pn is 10-51360-11 and type is s4r(L)-20,21, has anyone seen something like this before?