Went out on a tech call for a guy that just picked up a Whitewater and the topper wasn't working. Didn't take too long to figure out what the problem was:
The previous owner had added LEDs to everything but evidently didn't know that the topper took different light bulbs.
Looked like a bad day at the dentist!
Luckily the sockets held up ok - was able to put the correct incandescent bulbs in and everything worked again.