I have a 12 volt internal gas switch for the LPG tank on the bus. Have noticed this draws 0.5 amp when switched on. I know this is not much, but over a 24hr period its 12amps. Does anyone know if this can be disconnected and a manual tap fitted. The LPG tank is almost empty at the moment so now is a good time to get it sorted. Anyone know a fitter that could do this job preferably in the Northwest.