I’m having an issue with my headlights. I have a 1999 Ford Ranger XLT, 6 cyl., 4.0L 2WD vehicle. I recently purchased a pack of Silverstar Ultra 9004 headlights (link below). When the headlights are installed and turned on, the headlights will not change from highbeam-mode. If I try to use highbeams, it only dims the lights. Also, when the headlights are turned on, my fog lights do not come on (this only happens when the headlights are installed). The headlight switch has three options:
2) All lights, except headlights, on
3) All lights on
If I turn the switch to the 2 position, the fog lights will come on. When I turn it to the 3 position, the fog lights turn off and highbeams come on.
I have tried swapping the bulbs around around (left to right, right to left) to no avail. When I remove the bulbs and turn the switch on, according to the dash my lights work as they should (I can then control the high and low beam). Once the bulbs are in though, it defaults to highbeam.
I have also checked the fuses.
Thank you for your time, and if you need any further information I will be glad to give it.
Silverstar Ultra 9004 (These are what the manual said would work for my vehicle)
Added the appropriate link.