97OBWNEB

How exactly do I begin the process of hooking up the under the dash self diagnostic (outlet?) to check a AT oil temp light? It is flashing 16 times and I believe there is torque bind. I see a couple different things to hook into but am not sure what is what. There is a grey one and a yellow one. This is for a 97 legacy outback with 127,000 mi. automatic 2.5L. I found the gear shift pattern on here yesterday. A picture or diagram would be great. Thanks for any help. Andre'