Groover wrote:
"I just replaced a tail light bulb two weeks ago and want to say that was the second one this year."
I get 100,000+ miles out of my bulbs these days. My wife's car has 140,000 and counting on the taillights. I own 7 vehicles for use by 5 people and can only remember changing one taillight in the last 10 years or so. If I couldn't find a cause for your failures I would definitely check out some LED bulbs.
Yeah my wifes 2014 Ford Edge Sport still has the original bulbs, but it never leaves the street whereas my truck always gets driven on a dirt road and some pretty bumpy gravel roads so maybe its the vibration/shock that reduces the lifespan. Having said that these rear bulbs life span seam to be on par with my previous 05 Super Duty. I did look into LED's when I converted the front lights, fog lights, bed lights and rear back up lights to LED's, but decided I didn't want to mess with adding the resistors to prevent the fast blinking so I decided to stay with the standard Sylvania light bulb.