Originally Posted by 06-f150lariet
Get along really good with the dealer I'm at now an their really awesome. So light itself isn't coming on all the time an it kinda decides on its own if it wants to be stuck on low beam or high beam every once in a while though it works perfectly. Going by what's happening it kinda sounds like possibly a bad connection or corroded connection with all the salt over winter too. Just need a starting point to check for power or grounds maybe as simple as that. Thanks everyone so far. Truck has about 85,000km on it now.
Problem is hard to describe trying my best. Left head light will usually either not turn on, be stuck on low beam, be stuck on high beam or work perfectly but not often. Right side works perfectly.