Audiovox AVXMTG13UA Installation Manual page 14

CONNECTING THE DOME LIGHTS
Positive Switched Dome Lighting
To 3 pin Red/Black-Lamp ON
connector
Black/Red-Lamp Common
on Monitor
Purple/Brown-Lamp Auto
Factory Dome Light Circuit
To
constant
+12 VDC
Factory Door Ajar
Switch or Body
Control Computer
Negative Switched Dome Lighting
Red/Black-Lamp on
To
To 3 pin
Black/Red-Lamp common
connector
constant
Purple/Brown-Lamp Auto
+12 VDC
Fused
12
To
constant
+12 VDC
Factory Door Ajar
Switch or Body
Control Computer
Fused
To
constant
+12 VDC