Help with LED halo lights

Good evening all,
I purchased a very similar set of Halo lights, the 3 prong plug works great and get hi and lost working right off the bat. However I'm trying to decide what I want to do with the Halo portion. I don't want them on all the time so I was thinking of wiring them to the dash headlight switch as parking lights but I can only figure out how to wire them to the turn signals in the front bumper of my 66 cuda which is ok, but if I wanted them on and parking lights not turn signals what wire could I connect them to. Thanks