Flasher short?

In the earlier models, the metal body flasher modules were secured in metal clips so there was a chassis ground path there. There isn't supposed to be a ground path from its insides to its outside. I'm sure there are cases where the flasher shorted internally to external. Is this why they changed to plastic body modules ? Maybe... I can only take a wide guess at where the initial fault is hiding... With a bit of luck you might find a problem at a lamp fixture. Otherwise.. Signal switch in the steering column :(. That is based on my experience with manually operated switches and the fact that you have now burned open the fusible link.