Mark, that was my 1st thought, but he's talking about using a dual filament bulb in one position of the 2 bulb system, running lights separate

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