Can anyone validate this...
standard and 2x standard (130/110 or something like that). 2x doesnt necessarily mean twice as bright, it means they use twice as much power.
As mentioned earlier, I have found that the two headlight bulbs installed in my recently acquired truck, have the "2X" glass markings on the top face of the bulb.
Could this be what is causing the extra power draw on the headlight switch and thus the headlight flashing?