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It does sound like this is an alignment problem of the blue LCD or a problem on the main board controlling it. I am not sure if this is a field adjustable unit. A call to the authorized service center should provide that answer.
1991 Ford Explorer XLT Radio and Speaker Wire Colors
Pulled out the stock radio and found two plugs on the back of it. One plug had 7 wires (Power, Dimmer, Amp etc.) and one had 8 (Speakers).
7 wire plug (I could see these wires immediately from the plug):
Car Radio Battery Constant 12v+ wire = Light Green w/ Yellow Stripe Car Radio Ground Wire = Black Car Radio Accessory Switched 12v+ wire = Yellow w/ Black Stripe Car Radio Dimmer Wire = Light Blue w/ Red Stripe Car Radio Illumination Wire = Orange w/ Black Stripe ?? Don't know ?? Red Wire (No power to wire Constant or Accessory) Car Radio Amp Wire = Blue
8 Wire Plug (Wires were wrapped in a grey outer sleeve, had to cut sleeve to get to wires.):
Right Front: White w/ Green Stripe (+) Brown (no stripe) (-)
Right Rear: Purple w/ White Stripe (+) Light Blue (no stripe) (-)
Left Front: Light Green (no stripe) (+) White w/ Orange Stripe (-)
Left Rear: Light Blue w/ Black Stripe (+) Yellow (no stripe) (-)
Speaker Wires (found at the individual speakers in the doors)
Right Front: White w/ Green Stripe (+) Green w/ Orange Stripe (-)
Right Rear: Orange w/ Red Stripe (+) Black w/ White Stripe (-)
Left Front: Orange w/ Green Stripe (+) Blue w/ White Stripe (-)
Left Rear: Red w/ Green Stripe (+) Red w/ Blue Stripe (-)
very simple on the back of the deck you will have a wire harness Yellow = constant power supply Red = Switch power supply Black = Ground White = left front speaker + White /Black stripe = Left Front speaker - Grey = right front speaker + Grey /Black Stripe = right front speaker - Green = left rear speaker + Green w/ black stripe = left rear speaker - Purple = right rear speaker + purple w/ black stripe = right rear speaker -
wires for the honda are,
Constant 12V+
Blue/White
Switched 12V+
Yellow/Red
Ground
Black
Left Front (+)
Blue
Left Front (-)
Gray/Black
Right Front (+)
Red/Green
Right Front (-)
Brown/Black
Rear Speakers
6" x 9" Rear Deck
Left Rear (+)
Blue/Yellow
Left Rear (-)
Gray/White
Right Rear (+)
Red/Yellow
Right Rear (-)
Brown/White
Battery
White/Yellow Stripe or White/Blue Stripe
Accessory
Yellow/Red Stripe
Ground
Black
Illumination
Red
Dimmer
Red/Black Stripe
Power Antenna
Yellow/White Stripe
Left Front Speaker (+)
Blue/Green Stripe
Left Front Speaker (-)
Gray/Black Stripe
Right Front Speaker (+)
Red/Green Stripe
Right Front Speaker (-)
Brown/Black Stripe
Left Rear Speaker (+)
Blue/Yellow Stripe
Left Rear Speaker (-)
Gray/White Stripe
Right Rear Speaker (+)
Red/Yellow Stripe
Right Rear Speaker (-)
Brown/White Stripe
Appreciate the update and additional information. If I understand it right, your vehicle then has two connectors at the back: 1 big black/red/gray plug:
Yellow/light Green - always ON B+12;
Yellow/Black stripe - ACC B+12 goes to the IGN switch;
Black - chassis/ground;
Blue - remote trigger for add-on amplifier (if connected);
Blue/Red stripe - illumination (can go to parklight switch).
1991 Ford Explorer XLT Radio and Speaker Wire Colors
Pulled out the stock radio and found two plugs on the back of it. One plug had 7 wires (Power, Dimmer, Amp etc.) and one had 8 (Speakers).
7 wire plug (I could see these wires immediately from the plug):
Car Radio Battery Constant 12v+ wire = Light Green w/ Yellow Stripe Car Radio Ground Wire = Black Car Radio Accessory Switched 12v+ wire = Yellow w/ Black Stripe Car Radio Dimmer Wire = Light Blue w/ Red Stripe Car Radio Illumination Wire = Orange w/ Black Stripe ?? Don't know ?? Red Wire (No power to wire Constant or Accessory) Car Radio Amp Wire = Blue
8 Wire Plug (Wires were wrapped in a grey outer sleeve, had to cut sleeve to get to wires.):
Right Front: White w/ Green Stripe (+) Brown (no stripe) (-)
Right Rear: Purple w/ White Stripe (+) Light Blue (no stripe) (-)
Left Front: Light Green (no stripe) (+) White w/ Orange Stripe (-)
Left Rear: Light Blue w/ Black Stripe (+) Yellow (no stripe) (-)
Speaker Wires (found at the individual speakers in the doors)
Right Front: White w/ Green Stripe (+) Green w/ Orange Stripe (-)
Right Rear: Orange w/ Red Stripe (+) Black w/ White Stripe (-)
Left Front: Orange w/ Green Stripe (+) Blue w/ White Stripe (-)
Left Rear: Red w/ Green Stripe (+) Red w/ Blue Stripe (-)
Hope this helps. I spent hours looking for the correct color key and this one works for my '91 Explorer.
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