I had thought about this a long time ago... The idea
came up one day when a neighbor close my old homestead rolled his tractor. He wasn't hurt but darn lucky. I told him to take one of those mercury switches like from a thermostat --- rig it up to a horn and put a flasher in between that and a 3 way switch
If the tractor rolled, and he was pinned it would work automatically ---- if he just got sick or unable to drive he could throw the switch the other way and it would still work. at least it may draw attention.
came up one day when a neighbor close my old homestead rolled his tractor. He wasn't hurt but darn lucky. I told him to take one of those mercury switches like from a thermostat --- rig it up to a horn and put a flasher in between that and a 3 way switch
If the tractor rolled, and he was pinned it would work automatically ---- if he just got sick or unable to drive he could throw the switch the other way and it would still work. at least it may draw attention.