I can't help on the specifics Wally, but from my experience when I replaced all my 80 Series dash bulbs with LEDs, it's now like a bloody Christmas tree on Boxing Day (if that can mean anything to you)
They flicker and flash, on-off and are downright annoying!
The speedo and taco pod is fine with LEDs for some reason, they hold steady, but all the switch illuminations are flickering along with the heater control lighting, and I don't know what to do other than to replace them all together, with standard filament bulbs.
I've had the wiring checked out and all appears to be OK....
The choice is yours, I just thought you should know.