I used some F150 parts when I hooked up the illumination in my buttons. I think my '04 wheel is the same as the '97 F150, in fact I have a leather F150 wheel in mine, just not 100% sure of the F150 application it came from.
I only recently noticed the different slip ring / clock spring setup used on the earlier F53's. Not sure if a slip ring was ever used in an F150 or not. All the F150 of F53 buttons of that general vintage, look just like mine though, including the wiring, when I do an image search. Do yours look different?
(I'm a junkyard kind of guy. When I wanted my switches to light up, I grabbed some parts at the junkyard to play with. You might have luck doing the same, especially if you have some decent junkyards around.)
Just found Waiter's page about his wheel:
F53 – Centering steering wheel on Ford F53 motorhome
His wheel and switches look just like my '04, at least from memory, which is pretty clear for me, I've had it apart a few times fixing my cruise. His pictures look like yours?