I was looking at my e8 patch loom and I'm thinking that this conector is for my 3 bar map I looked though the haltech instructions and did not find out if I'm right or not. I wanted to see if that conector is for the map

 

That is the Spare A/D input. It can be used for the MAP sensor but I prefer to use the stock wiring and save the Spare A/D for something else. You can cut the connector off the stock harness for the stock MAP sensor and attach the Weatherpack connector to mate to your 3 bar.