location of 4-way flasher relay

My flasher failure affected both the emergency flashers and the signal lights.

Thanks again, we think the problem is solved as the result of the wires being pinched. Hopefully that will do it, we'll see.

Is your Trailer/Toad Wiring Harness Shorted/Grounded/Pinched?

The mod above is for the Turn Signals. I doubt (but I'm not sure) that the Turn Flasher also serves Four-Way flashers.

Thank you for all the info. We are still trying to figure this out.
I turned my emergency flashers on to check. They were flashing, then they stopped flashing but the lights were on. Turned the switch off, but the tail lights & brakes lights stay on. I have disconnected the the flasher, multifunction, and brake lt. switches...they are still on.

This shows the location, and a nice mod.
Link

I changed mine a year ago. It was a stubby metal cylinder, diameter similar to a quarter. It was somewhere just above the steering column all right. A little on the right side, I think. The replacement was a clear plastic stubby cylinder with electronic parts inside.

Moved to Class C from CVC.

I'm thinking it's a 4-way cube flasher mounted up above the steering column on an 04 but I'm not certain-would look like a black relay in a plug base if I'm right.