I ended up buying a new module.
Then I discovered that the front dome light had some fried components so I got a good used one.
Now everything works except two of the puddle lights.
I'll have to take those two door panels off to see what the problem is.

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970