I have an 87 Ranger with the 2.3 4 banger. I know Its missing some emission sensors, just wondering what each of these plugs actually do. I have 3 plugs on the driver side wheel well area. The first one is a 1 pin female spade connector with a green/yellow and a green/black wire going into it, second is a 2 pin plug with yellow/lt. green and lt. blue/black wires going to it. And third is a 2 pin plug with lt. blue and a lt. blue/black wire. Ive been looking through my repair manual electrical schematics and I can't find them anywhere. Im going crosseyed.

Also, on the charcoal canister there are a total of 4 ports. One to the fuel tank, one goes to the engine, but whats the deal with the 2 larger ports? where do they go or are they just supposed to have vent caps on top of it or something?

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87 Ranger xlt $350 project
97 Civic - soon to be turbo'd
89 Kawasaki KZ650 - Cafe Project

I have too many projects.

can u get pix of the connectors?