Dome supervision on Arm/Disarm

Ok here is the deal, Ive got a 05 f250 I bought a keyless entry alarm sys on e-bay, it's installed and everything is working except the interior lights when I arm or disarm it. I put meter on the wire and I get a ground but no pulses when system is armed or disarmed. i guess something is wrong with system (guess thats why i got it for such a good price). Here is my question, can I hook it up so the dome lights come on when the doors are unlocked and off when the doors are locked? Any help would be greatly appreciated.