Re: mercury switches

[JACQUES]

the old round faced furnace thermostats have mercury switches inside . if you are stuck you could probably canibalize one and rig it up Inside your engine at the proper angle

Heat shrink wrap it for protection or apply a coat of silicone or… époxy ..to protect the glass tube.

https://www.youtube.com/watch?v=RGohPXdJEgo

Joining AOMCI has priviledges 🙂