Help finding where electrical connector goes on 93 88?

[unioncreek]

My son replaced the upper intake manifold on his 93 88 with the L engine code. He didn't mark where the wires came from. I used the Chilton manual, but can find where on of them attaches to. It is in the wiring that contains the plug ins for the back bank of injectors, one connnector hooks to the engine temp sensor and the one I can't find a connector for has a black and a yellow wire on it. It is the last connector on that section of wiring harness. It is only about 6 inches long, but I can't find where it goes.

Any help is appreciated.

BobG