when i press switch 1 switch2 light come on as well

[Plonker 3]

You have the diagram correct, now have you double checked you have connected everything correctly?

 

[telectrix]

diagram looks OK. to me. should work.

just wondering if it's anything to do with the kitchen light being a florry.

 

[itselectric]

I have had this problem on a fault I was called to. It turned out to be fluorescent light in the kitchen, I changed the starter in the fluorescent and it cured itself. the outside light was one of the cheaper ones.

 

[Darkwood]

Fair enough DW, but where a outs did you get your info from. Did a quick check on his profile but couldn't see anything.

just seen it, didn't look far enough.

Click on his profile then click sub- option 'About'.... I tend to always profile anyone i dont know so i can either go in attack or helpful mode if they are asking way below their belt then let the wrath of Khan rain down .... this OP has confirmed its not a wiring fault so even a good question for a experienced sparks

I hope if i ever have a day in court that your not on the jury! :whatchutalkingabout lol

 

[Lucien Nunes]

As per post above, possibly the starting transient of the fluorescent is triggering the PIR spuriously. This could indicate excessive voltage drop on the circuit, or that the PIR is unreasonably sensitive to mains spikes. Either try a different PIR, a different starter (because the suppressor in the existing one might be duff) or possibly better still, fit an electronic 'Pulsestarter' in the fluorescent in place of the glow starter.

E2A You can confirm that this is the problem and not a wiring error, by first removing the starter. If the PIR now works normally, it's probably interference from the florry. If it still malfunctions, it's your wiring.

 

[Broken handle]

Check, check and (in your case) triple check your wiring! If it is not your wiring then you will be doing a lot of guesswork - easier to take the fitting back, claim it is faulty and get a more decent brand to replace it.