I am about done with the timing chain and valve job on my 89 runner. After I finished putting all the vac hoses and electrical plugs I have one plug left that I just can't figure where it goes. Do any of you have a clue?? I don't remember if it was actually connected to something when I took the head and intake off. Here's a pic

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1987 Raider - auto, Weber carb, bouncy seat, 31 Coopers,
1989 4Runner 4 Cylinder All stock