Hello, my dad just bought a 1995 Chevy Blazer 4dr, 4wd, Auto. All power and all leather interior for $500. Its really nice, no rust and it came from New York. But anyways the guys he bought it off of blew it up and put a vortech in it from a 1994 blazer. They put the engine in it replaced most of the sensors on it and it wont fire, it will turn over all day but it will never fire. We havent really had alot of time to mess with it but under the hood on the passenger side of the engine there is a plus that has 3 wires going into it. (Yellow, Pink, and Purple) This is not plugged into anything and it doesent seem that there is anywhere to plug it in. I thought maybe knock sensor or something but couldnt find anything. If any of you would help it would be great.

Thanks
Brandon

 

Nobody has this plug? nobody knows?

 

A picture is worth 1000 words. May still remain a mystery plug, but it could help someone identify it...