I have an '07 ram 1500 4 x 4. 4.7 l engine. recently the headlights started going off and on. when they first went off, |I was fortunate that the day time running lights stayed on. I was able to use the lights in the park light position and had tail lights to reach my destination. But now they also have began flashing off and on. I was advised by an online tech that it was my multi function switch. 200 bucks later, the problem persists...any ideas or solutions?