Originally Posted by LFugate
True, it should be a single element bulb. Can't remember if I've ever seen a single element with offset nipples.
Originally Posted by Emptypockets
Retired truck driver here & I have never seen a single element bulb with off set nipples either.
yep, because the dual element bulbs have different wattage filaments, like say a 3W running light and a 7W turnsignal. The nipples keep you from putting it in wrong and having the wrong filament light up.
We've seen it happen though. Driving down the street at night behind somebody. All of their tail lights are on, except one is really bright. Thats because he got the bulb jammed in socket wrong.
Hope for the original poster that its the wrong bulbs, that would be an easy fix.
2014 Silverado 2500 6.6L TD and 4X4
2011 Carson Standard Duty Car Hauler
2012 Forest River Stealth SK2112