99 town and country door locks

1 wire locking system, I used 1 relay for lock and 1 relay for unlock. 4020ohm resistor on lock and 665 resistor on unlock, and taped them both into the WHITE/ green wire.  According to a directfax for this type of installation, I had to tap in the factory disarm wire from the remote start onto the unlock wire, and tap in a wire with a diode from a starter relay turn on wire to the lock wire. Now my problem is that I can unlock the vehicle, but it wont lock. I can hear the relay clicking when I hit lock on the remote, but does nothing. I rechecked and tested all of my connections and all seems fine.

I used a radio shack 200v- 1A silicon diode. Could this be the culprit? Its the only thing I can think of that could be causing the problem.

Any suggestions? Thanks to all for your help!!