I believe there were some changes made to the way the headlights were wired starting in '06 or '07 that created some problems early on with the Brite Box in those model year trucks. I seem to remember it having something to do with the ECM and dash warnings related to burned out bulbs? One of my box's completely melted to the point of being able to see the light bulb inside and the other side was starting to change shape as well.
This discussion
https://www.turbodieselregister.com/forums/3rd-generation-ram-forum-no-engine-transmission-discussions/191375-geno-s-updated-brite-box-dead-again.html is the reason I posted my question
I think this was the part # of the kit I ordered 'SD8. FLC. 6 and Bulbzilla kit' (could have been Fogzilla) which gave me Brights, dims and fog lights all at the same time as well as allowing me to change to a brighter fog light bulb.