Alpine PKG-RSE2 - Manual (Page 29)

27
-EN
Mount Side
Dome Light Wire
Dome light wire connects the built-in Dome Light to the cable from
the vehicle’s Dome Light Switch.
Polarity change switch is located on the top surface that
mounts into the headliner.
Vehicle Door polarity depends on the vehicle type. The
polarity can be changed by the “Door SW polarity”
switch. (Default: Negative Switched System)
Polarity +: When door open, door signal is 12V
Polarity -: When door open, door signal is GND
Vehicle