"I have the double bulb in for park/turn"
but do you have the two contact socket? if so, you might have the elements wired so the brightest one is 'park', so the dimmer one flashing doesn't show up

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics