swap sohc zc into 90 crx hf Problems!!!

car is choking whenever i step on the gas....i found a wire behind the manifold and its not hooked up and i cant find the wire to hook it up to..could that be the problem ?? is the hf wire harness the same as the crx si??

Any check engine lights?
Are your IACV, FITV, TPS and IAT senors hooked up?
Pics of the wire help.

yes check the map sensor also. make sure the vaccume off of it is going strit to the vaccume nipple on the intake mani.

hf and si harness are similar, I think the 88 and 89-91 are the ones that have diff plugs if I am correct...take a picture of the left over plug and we can tell you where it goes I just did this swap for a friend into a dx...