[Richard]

I would add to this thread that on my coach I installed bot rear and front led lights, meaning the mechanical blinker flasher would not flash. An electronic relay fixes that. Dumb me, I didn't think to check the emergency flashers. They also would not flash, so I needed a second electronic relay.

If you have led lights, check to make sure your flashers work, you don't want to find out in an emergency that they dont