BowtieBrody
Jesus Murphy!
You could probably sell that horizontal switch and buy 2-3 vertical switches! Those things are made of unobtainium!
OR
Hoard any switch you find. Like the rest of us "normal" 400 owners; I'm still waiting to find the DRL off and the AUX labeled switches
I've only ever seen one other person find the big horizontal switch, and I think it was Dave (@88GMCtruck) and he got it out of a van I believe? I can't recall;