My fiance and I have a 68 404 Unimog (gasoline engine) which we've been having all kinds of problems with lately. The newest problem is that the ignition switch no longer seems to work. We've been looking all over trying to find a replacement. We can't seem to find a part number for it, or anyone that carries them. We weren't sure if it would work to just install a 7-post tractor or lawnmower switch instead. Any ideas?