Hi guys, apologies for how basic this probably is but any help would be really appreciated. I'm going from an old 3 wire Honeywell to a generic wifi thermostat, a becasmart series 6000. I've managed to get power to the unit but I'm unable to get the thermostat to actually activate the heating. I've contacted the seller but I don't actually understand what they mean. Could anyone put this into layman's terms or shall I give up before I blow myself up? I've attached a photo of the wires for the Honeywell that's currently attached and their response. They state the I need to 'add a electric wire to connect 1 and 4' Thank you!