I have just recieved a £750 electric bill for 2 months, do need to cut down on a few things, starting with my emersion heater, it is very hot and i need to fit a thermostat, i have just bought a drayton hts3 cylinder thermostat but am not sure where i wire it to, i have a wire coming from the top of my boiler going to my timer, and another wire coming from my timer to a junction box, so where do i connect my wires from my hot water cylinder thermostat too,