My Grandma has an outdoor spotlight that hasn't worked for quite some time. I realised there wasn't actually a bulb in it so I ordered a new one, switched off the mains, fitted it, put the power back on, and it works, the light comes on! There's only one problem - it won't switch off again!
Years ago, I remember that when the outdoor spotlight was triggered by someone approaching the door, the bulb indoors would light up as well. However, both bulbs are just permanently shining and I can't figure out why. My Gran has since forgotten why the bulbs were removed from the outdoor and indoor lights, or how they've gotten like this.
An initial Google of how to fix the problem mainly returns results saying to switch the spotlight on and off again rapidly to reset the sensor. However, I can't actually find a switch for it, and I believe it is wired directly into the mains. I did find this cover in the upstairs bedroom shown in the first photo which is directly behind the spotlight and I'm 99% sure this is the wiring for it but it's just that, wiring, and not an on/off switch.
Any help in remedying this would be much appreciated!