96 F-250 Keyless entry Prob

I'm currentally installing the autopage 750 LCD. I've gotten everything hooked up except for the keyless entry. The alarm and remote start are great. Ok back tot he Keyless entry delima. According to the diagram there are 2 wires in the pass kick panel i have to tap into. I found these wires and tapped into them. When i unplug that doors harness it works the locks in that door. But when the harness is pluged back in it does not work. What am I missing?? The car this is being installed on is a 96 Ford F-250 XLT powerstroke diesel. Thanks for your help. Bryan

I assume your using pink / YELLOW & pink/green for your locks. If you don't have a factory keyless entry then it will be a 5 wire system. Your alarm manual should show you how to do this unless the output is low (about 200mA). In this case you'll have to add relays or buy a DEI 451M. The DEI 451M has instructions on how to do 5 wire locks.