HELP! I was attempting to replace the halogen bulbs in my headlight with LED and after disconnecting the headlight replacing the bulb and reconnecting, the LED did not come on. Because it is late, I decided I would just remove the LED and put the halogen back in until I had a chance to work on it with more daylight. When I put the halogen bulb back in and plugged everything up as it was, the halogen bulb no longer came on. Can anyone help me resolve what I might have done to cause this? The housings are the basic factory halogen housings and yes I know that an LED is better with a projector but that will be coming, just concerned about having two working headlights as of now. Thanks in advance.

 

Compare to the other side to see if you've missed something or mis-connected a wire.

Take a deep breath. Sometimes it helps to say what you're doing/thinking out loud when working on these kinds of issues. Its helped me when I've heard myself say something crazy LOL!

 

Best guess right off would be check the plug on the backside of it. Then fuses/relays. I forget what # fuse is what, at the moment.

 

When I installed my F150LEDS.com led headlights, I had a problem with one not working.
I thought it was defective. I went back through the connections and one was not pushed in far enough. Over 2 years and working great. Apply some dielectric grease to the connections while you are at it.

 

Thanks for the input. After calming down and slowing down, I found the fuse to the low beam had blown. Replaced and all good to go!

 

Glad to hear it. Now lets see those before/after pics!