Pir sensor
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If you have a separate sensor and lights you should have access to of all the wires you need for any combination of controlling and/or extending the lights that you want.
The times you can typically encounter problems is when you want to add extra lights to an existing combined light & sensor fitting, as not all combined units give access to the switched live.
As Fleeting mentioned PIR's are just one of the various switch types you can use to control lights; e.g. Manual / Time-clock / PIR-Movement / Dusk-dawn / Relays & Contactors...
or mixed in any combination to suit your needs.
Ignoring the earth terminations that should be taken to every accessory, the basic essential connections you need to remember are:-
A manual switch only needs a permanent live feed in and a switched live out to power the lights.
A Time-clock switch requires a permanent live & neutral to power the clock and a switched live out to power the lights.
A PIR switch requires a permanent live & neutral to power the movement sensor and a switched live out to power the lights.
A Dusk-dawn switch requires a permanent live & neutral to power the daylight sensor and a switched live out to power the lights.
A light fitting requires a switched live in and a neutral out to complete the circuit and make the light illuminate.
( Relays & Contactors aren't generally used much in domestic environment, as they are normally used for switching heavier loads from lower voltage or current circuits.. )
So the ESSENTIAL thing you need to identify is which wires are "Permanent live", "Switched Live" or "Neutral"...
It is not uncommon to use a "neutral" cable colour as a "switched live"....
e.g. two-core & earth cable with Blue, (or previously black) used as Brown or Red....
Or a "live" cable colour as a "neutral"...
e.g. three-core & earth cable with one of Brown/Black/Grey, (or previous Red/Yellow/Blue) used as a Blue or Black...
But they should be over-sleeved / taped with the correct identification colour..
Which unfortunatley, if sleeve, can sometimes fall off!!!
So basic rule is Always identify/test/verify/prove exactly what wires you have got and do not assume because it appears to be a particular colour that it MUST be live or neutral!!!
But back to your original question yes you should have all you need to do what to want.
The times you can typically encounter problems is when you want to add extra lights to an existing combined light & sensor fitting, as not all combined units give access to the switched live.
As Fleeting mentioned PIR's are just one of the various switch types you can use to control lights; e.g. Manual / Time-clock / PIR-Movement / Dusk-dawn / Relays & Contactors...
or mixed in any combination to suit your needs.
Ignoring the earth terminations that should be taken to every accessory, the basic essential connections you need to remember are:-
A manual switch only needs a permanent live feed in and a switched live out to power the lights.
A Time-clock switch requires a permanent live & neutral to power the clock and a switched live out to power the lights.
A PIR switch requires a permanent live & neutral to power the movement sensor and a switched live out to power the lights.
A Dusk-dawn switch requires a permanent live & neutral to power the daylight sensor and a switched live out to power the lights.
A light fitting requires a switched live in and a neutral out to complete the circuit and make the light illuminate.
( Relays & Contactors aren't generally used much in domestic environment, as they are normally used for switching heavier loads from lower voltage or current circuits.. )
So the ESSENTIAL thing you need to identify is which wires are "Permanent live", "Switched Live" or "Neutral"...
It is not uncommon to use a "neutral" cable colour as a "switched live"....
e.g. two-core & earth cable with Blue, (or previously black) used as Brown or Red....
Or a "live" cable colour as a "neutral"...
e.g. three-core & earth cable with one of Brown/Black/Grey, (or previous Red/Yellow/Blue) used as a Blue or Black...
But they should be over-sleeved / taped with the correct identification colour..
Which unfortunatley, if sleeve, can sometimes fall off!!!
So basic rule is Always identify/test/verify/prove exactly what wires you have got and do not assume because it appears to be a particular colour that it MUST be live or neutral!!!
But back to your original question yes you should have all you need to do what to want.
