the 'flashing' headlights woulda been the bimetal circuit in the light switch opening/closing from excess current draw [or cheapy repro switch?] .... let us know how long the bulbs last running at 14V
"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
