[patrickt]

Yep, that looks right. Alright, put another posi-tap on the red wire that runs to the trailer relay and connect it to the bridge also, so that you have green/yellow/red all tied together and see if that makes it all flash when the key is on and the turn signal is signaling. That should work and, if it does, we find you a suitable triple pole switch that will connect all three instead of having to use two switches.