What about running both, a mercury switch and an oil pressure switch?
Not a bad scheme, Phil. Actually the oil pressure switch would probably be fine for most AD applications. Just me and my tendency to want as few loose ends as possible on something like this. Of all the schemes out there I think the inertia switch is definitely the one least likely to work with the AD truck given its harsh suspension and all. I can see having to wire the re-set button as the horn pad, you know. Either that or having one that requires the truck be hit by a meteor or driving by a grain elevator when it explodes in order to trip it.
