thanks for your answer. I was able to remove the fascia (2007 defender).
I unscrewed all the bolts, ant the fascia had 3 screws on top, that did not allow it to come off.
in the end, I was able to track the additional fog lamp switch wiring, into the engine compartment, under the car, and back into the DRIVER'S seat, into the relay, and ready to connect.
so in the end, everything was ready. just plug and play.