I have a 1999 425 s/n>700001. The key switch is starting to give the signs of failing so replacement is on the horizon. Replacement p/n AM128878 is an assembly and includes the entire module circuit board. I've never had any electrical problems (except, of course, the time delay module) so I'd rather just replace the switch but can't find "just the switch".
Anyone willing to sell me their faulty module assembly?