Fitting a PIR switch inside

[dxb2013]

Good evening,

I am trying to fit a PIR indoors in a walk in wardrobe. I have attached some pictures below. A couple of the PIR rear and the wiring diagram included in the box, and another two...one shows the wall switch with one live wire and the other to the light I assume. I have also taken a picture of the wiring in the roof that is attached to the current light. One is black, yellow and the earth....which is confusing. The other side of the chocolate block goes to the light in the ceiling.

Could someone help me figure out what wires go where. Do I simply cut the three wires (black, yellow and earth in the ceiling) and put them into the PIR and then back out to where they are going? Ideally I want the wall switch to override the PIR but not interfere with it beyond the occasional switching on and off override. If its easier then maybe I'll forget the wall switch and just use the PIR.

Help!

 

[Marvo]

Does the walk-in wardrobe have more than 1 light fitting? the wiring at the switch doesn't correspond to the wires at the choc block so I'm guessing there might be another fitting or maybe a transformer that's hidden somewhere.

 

[dxb2013]

Hi Marvo
There is just one light fitting yes and it has a transformer. However the choc box I have taken a pic of is before the transformer and the wires from the choc box (to the left of my picture) lead to the transformer. Hope that makes sense!? I was hoping to see the same cable, but the black one is confusing me.

There is an en suite next to the walk in wardrobe, would this have anything to do with it? But I would assume there would be more than the three cables into the choc box

cheers

 

[dxb2013]

There is also this diagram on the instructions for the PIR. This one leaves the bridge wire in place.

 

[Richard Burns]

The wiring you have for the light is non conventional as the core colours are not UK colours. Therefore you shoudl be very careful and esnure tha you have the correct cable identification before you proceed.
The wiring appears to be singles so should be run in containment.
If you were to connect the PIR in as you describe then the existing light switch would be controlling whether the PIR was functional or not.
i.e. the power to the PIR would be switched on and off.
If you wanted the PIR and the light switch to work independently then you would have to connect the PIR to the supply before the light switch and wire the light switch in parallel with the PIR supply.
If this is the only light on that part of the circuit then I would expect you would have something similar to this arrangement at present, however this is supposition as I cannot see the layout or design of the circuit.