DonÆt know exactly, but one time for no reason I was getting weird electrical problems. My cruise control was coming on without the input, when I manually set the cruise on and turn the lights on, cruise control would go off. Riding over rough terrain all my dash light would flicker; sometimes engine would lose power and then get back to life. I could not figure out what was wrong. Dropped the truck to the dealer and they had it for almost a week trying to diagnose the problem. Final answer I got was that they were able to duplicate the problem, but canÆt find anything wrong with the truck. Suggestion was to begin replacing parts starting with Cruise control module. Since it did not affect the truck that bad, I decided go live with it. Then I decided to remove all electrical mods. After going back to standard bulbs the problem wend away.
I really donÆt know why LED would cause such issues, but because they have small electrical circuit it seems that possible residual current in the circuit itself was feeding back to the ECU or maybe smaller than normal load caused problems. Again this is just a speculation, but I had really weird problems when they were installed.