no the bulbs 1156 or newer dual element, one element is taillight, one is brake and signal-Oh you have a seperate fixture for tailight? you have same bulb that one element flashes while the other filament is constant with brake? Id be curious of the number on the bulb. But mute since it works. at least visually?-Id start by swapping with other bulb that works..
Dave Ive seen those cpu issues before on the Dodge forums (and some simple side stepping if that what it is). -hopefully not. But arent there also fuses in that circut (trailer)?