Hi , i`ve just bought a new smeg touch button hob and on the back for the wiring connection i have 1 2 3 on one side 4 and a earth point on the other side of the connection point . The diagramme dont seem all that clear to me , i think i it says to put N to point 4 and 1 2 and 3 are lives, so i put the live to point 1 but the hob didnt work at all so i put the live to point 2 and got power to the hob and 1 ring worked but the other 3 didnt, havent put it to point 3 yet thought id see if anyone new the problem first. does points 1 2 and 3 need to be linked to each other? if anyone can help then thanks.