Stop in for a cup of coffee

So, van in shop.
Is my parts supplier delivery van.
He asks if i can replace multi-function switch.
Tells me whats wrong.
Nope, broken wires in door jamb.
Bcm is in driver’s door,and makes all kinds of things go wrong.
At least thats what im thinkin,last couple times, when wipers act up thats the issue.