DRL wiring

[Cway]

Hey all, I've got an 89 b2 XL. It did not come with daytime running lights, but I have some after market lights that I am wanting to wire with a DRL function. Does anyone know what wires I can tie into that have key on power, so I can get them to be on when the truck is running?

 

[Cway]

I'm going to run white to a ground, so I'm just trying to find a hot that I can safely use. The lights are LED, if that makes any difference.