dogfood

On the iac valve on a dx it has 3 pins, a signal a posative and a negative. On an ex it has 2, a posative and a negative. If I am using a dx iac valve and an ex harness can I just use jumper wires and skip the signal wire? I would use the iac off of an ex and call it a day but the manifold I have is aftermarket and dosen't have a place for it, hence I still want to use the dx throttle body mounted iac. If any one has anything to add it would be appreciated.