Quote Originally Posted by fatboy View Post
that should be power check to see if fuse in trailer power
Thank you for the suggestion. Unfortunately, this does not seem to be the case. I checked the RT's trailer fuse (F4 in the right fuse panel); it is good, and the contacts on the fuse show unswitched battery voltage at both sides of the fuse. At the rear spade connection, no voltage, whether ignition off or on.

Happy to take further suggestions.