If memory serves, Stop, LT, RT, Tail and Reverse are all in those two plugs under the vehicle in the rear. Looking at the EWD I found that those should be:
Green wire: Taillight
Green/White wire: Stop
Red/Black wire: Reverse
Green/Black: LT
Green/yellow: RT
I was able to order plugs and connectors from Eastern Beaver and make my own wires up that plugged right in.
6110-8323, 6120-0523
www.easternbeaver.com
The only downside is that the factory plugs aren't weatherproof. One could easily upgrade to Sumitomo or Yazaki connector with weather seals if you live in a humid environment.