Ford F150 Harley Davidson Alarm Help!

I have installed a security system into a 2002 Ford F150 Harley Davidson Pick-up. My problem is that the system triggers after 44 minutes. The security system diagnostic tells me that it is the door contact circuit. Can anyone help me out with the colour and location of the correct wire? The truck has been imported into England so I have been unable to get any information over here. Thanks in anticipation. S O U N D S A L A R M I N G

The BLACK / YELLOW catches the drivers door and the BLACK/ pink catches the passengers door. The wires are found in there respective door harnesses. On the Super Crew the rear door trigger is BLACK/ lt. blue low in the driver kick panel. Use all wires and diode isolate each. See direct fax document #1076 for wiring information. Both wires may also be found at the GEM module located above the fuse box. On models without a dome light delay use ORANGE / lt. green (-) at the light switch. http://www.directechs.com/techtips/pdfs/resources/security/directed_techtips/1076.pdf I recommend using diagram A

Cheers mate. I'll give that a go.