I have two starter buttons that were in the baskets and buckets that came with my truck,one is a button with a little square box with two screw type conectors "poss and neg" I think! It looks like one that is available at advance auto.The other is a "Vintique"made in USA#6A-11500-c it fits the dash much better in my 51'GMC,but it has only one bullet or bayonet type connector in the back I don't know if its 12 or 6 volt.I'd like to use the vintique because it looks much better and has a smoother action. But I'am hving some trouble seeing how to wire this in to the new 12v harness with the orginial style ignition switch. Thanks jimmy