Strange button on passanger Door

While installing mirror beams on my Vic ive discovered an aftermarked button with cut wires. These wires seem to go to the door-ajar switch but have been cut in multiple places. The driver side door does´nt have this modification. Any idea why its there, what its purpuse is/was?
The car was originaly a patrol unit at the Police Department in Vallejo (CA) from 02-08 before it was then decomissioned and exported to germany in 2013 where it was restickerd as a CHP crown vic. I own the car since October of last year.

 

[NPS Ranger]

A bypass button to prevent the dome light going on if the passenger opened the door? Did it connect to a latching relay perhaps?

 

[Officer_Wolf]

That was my guess aswell, i may just wired it back up and check. currently my vic has no door chime and the dome light also doesn´t come on when i open any door. Thought it was the "blackout" version but i might just be that button thats not hooked up anymore.