Hi I want to fit a ranger 3 programmable timer to an immersion switch.
There are 2 live wires into the immersion switch, standard switch with red flourescent light, one at the top & one at the bottom marked load; which one do I need to re-route through the timer?
Also when everything is wired correctly do I leave the switch permanently on & will know the timer is working when the red light comes on? Or will the red light be permanently on regardless of whether the heating is on or not?
Thanks for any help.