12 ram custom headlights

So here is my project. It’s for a 12 ram 1500 with the quad headlight (separate highs and lows). The products I’m using are morimoto ds2 projectors with 55w hids and a rigid industry led pod as a auxiliary high beam. the build I know how to do but what I am somewhat stumped with is the running light part. This truck has a Single filament Hi bulb that works as the running light to. I haven’t done to deep into the stock electricals yet but I can only Imagine that inside the brain Box it’s sending a lower voltage to the bulb to have the running lights some thing like 6v. My question is if this is the case what can I use to separate the 6v and the 12v to go to separate lights.