05 F150 factory keypad w/aftermarketalarm

I ordered my 2005 F150 FX4 a month ago.  The truck comes with factory keyless and has a hardwired keypad on the door.  SO I can't just remove it without having a hole.  Has anyone come up with a way to tie an aftermarket alarm into these keypads?  I would only want it to arm and disarm the alarm.  Since by doing that it would also unlock/lock the doors.  Don't need it to remote start or anything. 

since that is unreadable.

First email:

I recently order a 2005 FX4 F150. The truck comes factory with Keyless entry and a factory door keypad. I’m looking into getting the CA670 from you guys. I can’t determine if it will work with the factory keypad though. I need an alarm that has an arm and disarm wire. This way the keypad can disarm the alarm and open the door at the same time. Any suggestions or advice as to what to go with or how to achieve this? I say that you sell the factory alarm/remote start. But my ultimate goal is to have a 2-way system, and utilize the factory door keypadFirst response:Hi, the CA670 does have that. You can still use the factory keypad to arm and disarm the CA670. It has a couple wires that have to be installed when you install the system, but the 670 is great for that..Hope that helps. Let me know if you have any other questions. ThanxSecond email:That sounds excellent. I have personalled installed about 15 remote start/alarm combo’s (mostly the viper line-up). SO I really have no interest in paying a shop to install the system.  The CA670 itself I can wire and install with no issues, provided I get an installation manual with it. Also does the manual include something telling me how to wire the keypad in? To make it easier, can I have a PDF copy of the manual or something that let’s me take a look at the installation?second response:Hi, i do not have a pdf copy. The instructions that come with the unit have all the wiring layouts and have a section just for that. What you mentioned is no problem, it has that all in the manual.