I'm sure for some us out here there our some parts on our K5s that we don't have a clue what they are. I think alot of people might wanna give this post a try and see if your question is solved. My question is on an '82 K5 w/ crate 350. There's little thing over my oil filter comming out of the engine that has a big nut on it and a plug with three wires going into it. What is it and what does it do?