T.U.F.F.

I just finished the suspension and flat bed on my conversion of my 89 2WD to 4WD with a 5 in marlin lift and I am in the process of installing a rebuilt 86 22R into my truck I put the engine in with duals no problem but the plug coming off the carb has a green connector with 4 wires coming into it. The 89 2WD (originally carbed motor) does not have the plug in the harness. I am down to that being hooked up to start the engine I looked in the haynes and chilton manual and nothing there to help. Any help would be greatly appreciated.