Hey all, i will post up here the tutorial for wiring up fog lights from scratch.
but in the mean time here is how the fog lights operate.
this diagram may help:
Basically when you push the fog light button, it sends a signal to the dials (the brain of the car),
which (if been Tech2'd) will send a signal to the fuse board under the bonnet of the car and turn on the Relay (its basically a fancy switch which then connects the power to the fogs wiring,
then hey presto your fogs will be shinning bright!