Managed to get it running today. There is a some type of diapham bell shaped thing that threads into base of the mixer with 2 terminals on the back side of it. 1 terminal went to a selonoid valve that the tank line goes to 1st the other terminal had a wire coming off 12v+ side of coil with key on to the other 1. Not sure what this thing is called or if it's hooked up right but seems as when engine rolls over it supplies power to this selonoid. If anyone can confirm it's wired correctly. This will be a 1st step to verify. Next is there is some type of switch at the base of the steering column with a black and green wire coming out of it and looks like a spring sticking out of it like some type of saftery switch. What is it and where dose it hook up and how does it work? Can send pics to an email as I don't know how to post them here. Also this is a duel fuel gas and propane how do yoh switch from 1 to the other. Km only running lp gas right now. Thanks