footwell lights

I am in the process of adding footwell lights to my van and seems like its pretty easy to do, im looking at making up some plugs/cables to make it plug and play with no wire cutting/joining just factory connectors for everything. Wondering if this would interest anyone else as before i fit it to...

My sliding door step light is not wired up :-(. Any thoughts where I can best take an appropriate feed from that is switched by the sliding door? To be a little clearer - I believe that I need to pick up the permeant 12v - red/black ?? and the Convenience Module Ground - brown/black?? Any...