One dim headlight H4

[Rymanrph]

I have new problem with my head lights. One of them only partially lights. It's just really dim. I have the auto pal housings with eautoworks harness. Any ideas?

[Motion Offroad]

Switch the bulbs side to side and see if it does the same thing with the other bulb in that housing/harness. If not than you have a bad bulb, if so you have bad wiring/connection.

 

Also be sure to never touch the bulb itself with your bare fingers. The oil in your fingers can ruin the bulb.

[Jeep Driver]

Make sure all three prongs are in the socket. Mine did the same and one prong went to the outside of the socket when I plugged it in. Seems the H4 prongs on the autopals are a little off...........gotta kinda wiggle in on and adjust as you plug in.

 

Was it supper supper dim?

[Rymanrph]

I just happened to notice it one night recently. I know it hasn't always been that way. I just recently installed a new fog light harness, so it's possible that the plug may have wiggled loose while I was installing. I'll check the plug first and then swap the bulbs.

[vaquaro]

I have the same harness , double check your grounds ( try running an extra ground loop ) as the self tapping screws to the body are not always reliable . :thumbsup:

[Rymanrph]

I have the same harness , double check your grounds ( try running an extra ground loop ) as the self tapping screws to the body are not always reliable . :thumbsup:

 

You got it. It was a bad ground.