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I just switched from halogen headlights with Led's. They are going on and off left then right, back and forth like I am trying to signal aliens! I put the old bulbs back in and everything is fine. I've done this to my cars and my 06 F350 and they work great. My 3500 is a 2009. Any ideas??
Thanks...
I just picked up an 09 3500. Low miles 109k. 6.7l. This box is connected to the sensor on the intake side right after the air filter. The older man I bought it from said it was on the truck when he bought it T the dealer. He has no idea what it is. Most of the words are rubbed off over the...