negative parking lights

  It's not the vehicle I'm concern with. Is the alarm brain the APS-786 that I'm talking about.

Onboard relay right , shouldnt back feed

  I was reading the manual (go figure) and found that you can connect the pk lights feed to ground so you can use it on a negative system .

 That means that the system can be used on a negative pk lights system without the need for an extra relay. The things you learn when you actually read the entire manual instead of just using it as a reference to check what this or that wire is for.  I have installed dozens of these units and have never bothered to read the whole thing, I just read the part that tells you what the wire is for and skip the rest( the part that tells you what the wire does).

  Thanks to everyone for your help. Next time I'll read the whole thing intead of just what I need.