You'll have to do some wiring splicing.
Check out this artical; http://www.thedieselstop.com/contents/getitems.php3?1999-2004%20%2410%2F%2415%20AIC
The 2005s have an easy elevated idle mod that you may be able to use. The elevated idle will set the RPMs at 1200 rpms, but won't engage if the truck is moving or the service brake is being applied. So this mod won't be useful unless you can bypass all the lockouts. But it works great for combating wet stacking. Check out the Ford upfitters guide for more info: https://www.fleet.ford.com/truckbbas/index.htm
Check out this artical; http://www.thedieselstop.com/contents/getitems.php3?1999-2004%20%2410%2F%2415%20AIC
The 2005s have an easy elevated idle mod that you may be able to use. The elevated idle will set the RPMs at 1200 rpms, but won't engage if the truck is moving or the service brake is being applied. So this mod won't be useful unless you can bypass all the lockouts. But it works great for combating wet stacking. Check out the Ford upfitters guide for more info: https://www.fleet.ford.com/truckbbas/index.htm