Quick question about left rear brake lights. First off, I have not tried to replace the bulbs yet. The running lights work (both sides) but when pressing the brake pedal, there is no brake light activity on the left side. I see 2 filaments in the both of the bulbs, and both "look" ok. The right brake light illuminates fine (both sets of filaments work), but the left one does not, even though the front filament in both bulbs stays on with the running lights. Is this a possible electrical issue or should I just try to replace the bulbs? Thanks for any info!