you definitely have a wire cut the dash lights control the radio lights and dimmer functions on aftermarket radios, this may help,
Radio
Harness #1
+12V.....Red/yellow
Acc......Green/red
Dimmer.....Blue/red
Front Left -.....Black/white
Front Left +.....Blue
Front Right -.....Black/red
Front Right +.....Brown
Harness #2
Right Rear -.....Black/pink
Right Rear +.....Orange
Left Rear -.....Black/yellow
Left Rear +.....Green
Alarm
Wire/Function.....Color.....Location/Description.....Polarity
12 Volts.....White/black.....Ignition switch.....+
Accessory.....Red or red/yellow.....Ignition switch.....+
Ignition.....Black/white.....Ignition switch.....+
Starter.....Black/green or green/yellow.....Ignition switch.....+
Starter2.....Black/ yellow.....Ignition switch.....+
Brake Switch.....Brown/red.....At switch above brake pedal.....+
Dimmer.....Pink/black.....At any illuminated switch in dash.....+
Parking lights.....Blue/red.....Drivers kick panel.....+
Doorpin.....Red/black***.....Pin-9 on Smart entrance module**.....-
Factory Alarm arm.....Yellow****.....Pin-30 on Smart entrance module**.....-
Factory Disarm.....Yellow/red****.....Pin-31 on Smart entrance module**.....-
Hand Brake.....Yellow or gray/blue.....At switch on hand brake lever.....-
Headlights.....Red/black.....At steering column.....-
Hoodpin.....Black/pink.....Pin-29 on Smart entrance module**.....-
Rear hatch pin.....Common with doors
Horn.....Lt. Green/red.....At steering column.....-
Reverse lights.....Yellow/red.....In driver’s running board.....+
Tach.....Blue*.....At distributor front of engine*.....AC
Key sense.....White/green.....Pin-24 on Smart entrance module**.....+
Speed sense wire(VSS).....Green/black.....Pin-37 behind instrument cluster*****
Lock.....Lt Green/red.....Pin-18 on Smart entrance module**.....-
Unlock.....Brown.....Pin-19 on Smart entrance module**.....-
Driver Window up.....Blue.....At master switch.....Rev. pol
Driver Window Down.....Blue/black.....At master switch.....Rev. pol
Passenger Window up.....Blue/yellow.....At master switch.....Rev. pol
Passenger Window down.....Blue/white.....At master switch.....Rev. pol
Left Rear Window up.....Green/red.....At master switch.....Rev. pol
Left Rear Window down.....Green/yellow.....At master switch.....Rev. pol
Right Rear Window up.....Green/white.....At master switch.....Rev. pol
Right Rear Window Down.....Green/black.....At master switch.....Rev. pol
thanks to Bkyln.x on this thread: https://www.clubxterra.org/threads/radio-wire-designation.29051/
Radio
Harness #1
+12V.....Red/yellow
Acc......Green/red
Dimmer.....Blue/red
Front Left -.....Black/white
Front Left +.....Blue
Front Right -.....Black/red
Front Right +.....Brown
Harness #2
Right Rear -.....Black/pink
Right Rear +.....Orange
Left Rear -.....Black/yellow
Left Rear +.....Green
Alarm
Wire/Function.....Color.....Location/Description.....Polarity
12 Volts.....White/black.....Ignition switch.....+
Accessory.....Red or red/yellow.....Ignition switch.....+
Ignition.....Black/white.....Ignition switch.....+
Starter.....Black/green or green/yellow.....Ignition switch.....+
Starter2.....Black/ yellow.....Ignition switch.....+
Brake Switch.....Brown/red.....At switch above brake pedal.....+
Dimmer.....Pink/black.....At any illuminated switch in dash.....+
Parking lights.....Blue/red.....Drivers kick panel.....+
Doorpin.....Red/black***.....Pin-9 on Smart entrance module**.....-
Factory Alarm arm.....Yellow****.....Pin-30 on Smart entrance module**.....-
Factory Disarm.....Yellow/red****.....Pin-31 on Smart entrance module**.....-
Hand Brake.....Yellow or gray/blue.....At switch on hand brake lever.....-
Headlights.....Red/black.....At steering column.....-
Hoodpin.....Black/pink.....Pin-29 on Smart entrance module**.....-
Rear hatch pin.....Common with doors
Horn.....Lt. Green/red.....At steering column.....-
Reverse lights.....Yellow/red.....In driver’s running board.....+
Tach.....Blue*.....At distributor front of engine*.....AC
Key sense.....White/green.....Pin-24 on Smart entrance module**.....+
Speed sense wire(VSS).....Green/black.....Pin-37 behind instrument cluster*****
Lock.....Lt Green/red.....Pin-18 on Smart entrance module**.....-
Unlock.....Brown.....Pin-19 on Smart entrance module**.....-
Driver Window up.....Blue.....At master switch.....Rev. pol
Driver Window Down.....Blue/black.....At master switch.....Rev. pol
Passenger Window up.....Blue/yellow.....At master switch.....Rev. pol
Passenger Window down.....Blue/white.....At master switch.....Rev. pol
Left Rear Window up.....Green/red.....At master switch.....Rev. pol
Left Rear Window down.....Green/yellow.....At master switch.....Rev. pol
Right Rear Window up.....Green/white.....At master switch.....Rev. pol
Right Rear Window Down.....Green/black.....At master switch.....Rev. pol
thanks to Bkyln.x on this thread: https://www.clubxterra.org/threads/radio-wire-designation.29051/
