Mysterious red connector

[Dannothemanno]

I was working on my 97 k1500 today and while I was under the truck I noticed this red connector hanging down it's located need the front on the truck close to the diff. Does anybody know where it goes I hope it goes to the 4x4 but I doubt it

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[evilunclegrimace]

I think that it is the connector for the EVO P/S pump