What is the color code for buick rendezvous trailer towing harness?

I have a 2004 Rendezvous white - ground yellow - left turn/brake light green - right turn/brake light brown - tail light if you have a red wire - connects to external electric brakes This works with a standard 6 pile setup and I use a 6way to 4 way adapter when towing a U-Haul hope this helps alan_76@msn.com