I think I might have Christine's cousin with my '63 Fury as I have a couple posts out on weird BS problems! After months of no hassles with my blinkers, developed one when driving...the blinkers are lethargic, super slow, that is until I stop or when it's parked...they work fine! I have LED tail/brake lights and the flasher unit required with the extra ground wire installed. Now in the past couple days this is the deal. Thought I'd throw out a post on this in case anyone has run into this problem before I go on a hunt trying to figure out the problem. Thanks!