Headlights Turn Off While Driving problems of the 2004 Dodge Dakota

The driver headlight quit working. I went to the store to replace it thinking it had burnt out. When I replaced the light it did not work still and the old headlight still had both filaments proving it was still good. I took the truck to the dealership after both headlights quit working on me when I was out at night driving less than a 10th of a mile from home. I managed to not get in an accident. The dealership told me that the ctm and head light switch were bad however the ctm was a "obsolete" part and they were unable to get me one. After they released my truck back to me to drive as I please, I was able to purchase an older ctm from a 2003 4x4 automatic Dakota 4. 7l. Now my lights work and I have a "guarantee" from the ebay seller that it will work for 6 months. I have a seriously dangerous vehicle and I can not trust my headlights will not go out at any time so I can not drive it at night in good confidence or moral conscience. The dealership lilithia Dodge of roseburg oregon has record of my truck being in their possession for multiple days before releasing it back into my possession without doing anything but a diagnostics test.