Can someone please help me?

I am trying to install my BICYACO HALO Headlight in my 2012 Harley Davidson Fatboy. The light came with a three prong plug and play for the high and low beams, but the halo daytime running lights have an added red wire. And I know I need to wire it to the yellow positive low beam wire. them problem is there are two yellow wires. How do i go about getting this halo light to power up for daytime running lights? Which yellow wire do i splice into? And how do i do it? Just cut one of the yellows right in the middle and cut each side back and cap all three off together? Thank you!!!!!!

 

Cap all three together? Seriously, this is not a bathroom light switch, twisting wires together and capping with electrical nuts is AC stuff.

For a nice clean install, without hacking into your wiring harness:

Make up a new wire (Yellow), connect it to the passing lamp switch at the same place there is already a yellow wire, run this new wire into the headlamp bucket and connect it to your new headlight.

Protect the new wire with shrink tube.