06 expedition and pac tr 7

Hello,

I have an 06 Expedition with factory keyless entry and want to install a PAC TR-7 timer unit that will control (2) other relays.  According to the PAC TR-7 instructions, the timer can be tripped by either  a single (-) or (+) pulse.  From what I've read, the door locks on my truck are (-), but I'm still a little confused as to which wire at the VSM I need to tap in order to trip (i.e. start) the timer.  Any help would be appreciated.

Thanks for the reply!  Since I only want the timer to be tripped when unlocking the doors, TR-7's (+) pulse input wire would be connected to the pink/orange unlock wire at pin 8?

Really?  Is there any way to prevent that?

When I press the "unlock" button on my factory key fob, the interior lights and exterior puddle lights fade on (takes about 1.5 seconds for the bulbs to go from 'Off" to full brightness).  What I'd like to do is add my low beams (no parking lights) and reverse lights to this feature, except have them come on instantly (no fade).  I've already researched the lighting diagrams and found that by applying 12+VDC to the main low beam wire and the reverse light wire, these lights will come on (not GEM controlled).  I was planning on having the timer unit trigger a standard relay that will apply 12+VDC to the headlamp and reverse light feeds.  I know that I could tap the dome light and use that to trigger (i.e. start) the timer, which would then trigger the relays, but the downside to this is that the headlights and reverse lights would come on any time I manually turned on the interior lights, which is not something I want.    I've also thought about somehow "tricking" the GEM to energize the AutoLamps circuit when the key fob's "unlock" button was pressed, but I have yet to look over the electrical diagram for the GEM, so I don't even know if that's possible yet.  

Ryan  

Hey Chris.  I wired it up like you suggested and it works like a charm!  Thanks for the help

Ryan