91 park avenue headlights will not come off bright

[craig57]

I have a 91 park avenue with a 3.8 liter aprox 280000k
the head lights will not dim and ocasionaly will go out i've checked all bulbs grounds fuses and corrected some problems.
Im wondering does this car have a daytime running module or some other sensor that may be malfunctioning or simply is the dimmer switch faulty.
I cant seam to find anything relating to other modules on my online resources to the locale library.
So im hoping some one can shed some light on this
Thanks

[HotZ28]

No DT running lights on a 1992 that I am aware of! I would try a new dimmer switch first, they only cost about 15-bucks.