i got the $20 wig wag from galls that is basically a box with a switch on it that i use on the rears and the multipattern one for my headlights (2 switches switch between the 3 modes and off) they work great, but the rear one was a royal pain in the arse to install since I didnt want to illuminate the 3rd brake light with it(NHTSA prohibits lighting the 3rd light unless actually braking, and since i use it while responding, i want people to know when i am slowing down) I used 2 relays right before each taillight so that when the unit is switched on, the SPDT relay switches and the wigwag output goes to the taillight while the brake light signal from the car is isolated so that when i apply the brakes the flasher overrides the brake light and functions as it should. i also added a relay for the reverse lights so that when I put my vehicle in reverse the flasher still operates as normal. everything works great. except my multipattern flasher one of the patterns no longer works. has anyone else had this happen to them?