central locking

[san]

Hi i am after some help when i bought my xsara 1.4i Vreg 1999 the remote central locking didnt work the central locking works fine but the key is nackard so i bought an after market set up of ebay.But i need to find the triger wires for locking and unlocking now i dont know where these are or where the controle moduel is so if enyone has any answers to the following questions then please feel free to coment
1what colours are the trigger wires and are they + or - trigers
2 Is there a controle box for the central locking on this year of xsara and where is it

PLEASE HELP I AM GOING AROUND IN CIRCLES

[spider]

I *think* its behind the glovebox area on these as the 306's are under the drivers seat (actually under the seat near the sill area)