Help Identify these wires

[bbradf44]

Hi all,
I've been trying to track down some electrical problems I've been having and I found these plugs that look like they go together but are not plugged in. Can anyone tell me what these go to? It's a 1993 ranger 4cyl. Thanks!

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[shadetreebronco]

Im going to guess the are for a oxygen sensor.

 

[adsm08]

Im going to guess the are for a oxygen sensor.

I'm going to do more than guess.

Those are for O2 sensors.

 

[bbradf44]

I'm going to do more than guess.

Those are for O2 sensors.

Ah so probably not what's causing my voltage to be all over the place. Thanks guys!

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