Guys I have an 07 flhx. I want to put a security system on the bike not to sure about aftermarkets (maybe Guard Dawg)yet. My question is I believe my bike has to use the smart security system not the factory security system, Correct? Next does harley have a pager system that works with the smart system? I have located a new pager system for reasonable price (91665-03) but think it only works with factory system which I dont think will work on my bike. Any help with all this would really be great.

 

Go see the parts guys they can tell you what you need to use for that year then go from there

 

For your bike I believe you need the 68200-07 H-D® Smart Security System This just replaces the factory TSM (turn signal module)
To use a pager I think you have to have the 68317-06A H-D® Security System Smart Siren II and one of the two pagers offered 91672-07 or 91660-06

You can download all the instructions from the Harley site.
And you do have to see a dealer to actuate the key fob to the TSSM (turn signal security module)