Dimming lights?

[powerstroke64L]

06 F-250 Headlights go dim after 3-4 days, then if I drive it in the rain or wash it the lights go bright again. 3-4 days go by and repeat the same. Lights dim prob 40 to 50 %. Brand new alt and batts. Any ideas? Thanks.

[brinker]

Originally Posted by powerstroke64L

06 F-250 Headlights go dim after 3-4 days, then if I drive it in the rain or wash it the lights go bright again. 3-4 days go by and repeat the same. Lights dim prob 40 to 50 %. Brand new alt and batts. Any ideas? Thanks.

Have you checked the wireing and grounds?

[powerstroke64L]

Originally Posted by brinker

Have you checked the wireing and grounds?

I've checked the wires. Where is the ground for the headlights located?

[brinker]

mitchell ondemand just sayes right side of engine compartment for the right side and left side for the left so im not to sure. do you have a plow or anything on it thats tied into the headlights?