Colour Coded

We have been looking after Euan & Eve ( and Isla) today but I nipped off to our local electronics store to pick up a couple of contact switches. But how to wire them as they are a different format from the old ones? Fortunately, MaggieD spotted this one on the patio doors so it becomes the template to follow.
if I get this wrong, the alarm system may go into total ring mode so wish me luck and look out the earplugs!