The new flasher came today so I put it in. Works fine. But what is up with the old flasher?
It took a little careful prying but I snapped cover off the old flasher.
There is some ugly soldering on this but I don’t see anything super suspicious. I will take this to work tomorrow and poke at it under magnification. The good news is the Jeep is flashing again.
[UPDATE]
I examined the flasher under a microscope and re-soldered the messier solder joints. It still does not work so I threw the flasher away. Better yet is I drove the car several times over the last week and nothing new broke.