What is the orange wire on kenwood deck for?illuminate what?

Is your illumination wire (usually orange) hooked up? If so may be a problem with faceplate or stereo itself.

Hi, according to my source, there should be an accessory wire that is blue with a yellow stripe. If your is yellow/red, that's fine. You actually should prefer an accessory wire to an ignition wire as there may be less static on the accessory wire. Just make sure the wire does not have power when the key is off. Don't use the illumination wires--they are not needed for the aftermarket head unit and should be taped off.

1991 Subaru Legacy Car Stereo Radio Wiring Diagram
Car Radio Constant 12v+ Wire: Red/Green
Car Radio Switched 12v+ Wire: Blue/Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Front Speakers Size: 6 1/2? Speakers
Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Yellow
Left Front Speaker Negative Wire (-): Blue/Red
Right Front Speaker Positive Wire (+): White
Right Front Speaker Negative Wire (-): Blue/Black
Rear Speakers Size: 6 1/2? Speakers
Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Yellow/White
Left Rear Speaker Negative Wire (-): Blue/Red
Right Rear Speaker Positive Wire (+): White/Blue
Right Rear Speaker Negative Wire (-): Blue/Black

New Yorker and Fifth Ave have different colors for RR speaker neg. Does either of these match up?

1991 Chrysler New Yorker Car Audio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Red
Car Radio Accessory Switched 12v+ Wire: Red/White
Car Radio Ground Wire: Black
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: Orange/White
Car Stereo Antenna Trigger Wire: Yellow
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 3 1/2?
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Green
Left Front Speaker Negative Wire (-): Green/Yellow
Right Front Speaker Positive Wire (+): Purple
Right Front Speaker Negative Wire (-): Purple/Yellow
Car Audio Rear Speakers Size: 6? x 9?
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Brown/Yellow
Right Rear Speaker Positive Wire (+): Blue/Red
Right Rear Speaker Negative Wire (-): Blue/White

1991 Chrysler Fifth Avenue Car Radio Wiring Schematic
Car Radio Battery Constant 12v+ Wire: Red
Car Radio Accessory Switched 12v+ Wire: Red/White
Car Radio Ground Wire: Black
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: Orange
Car Stereo Antenna Trigger Wire: Yellow
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 3 1/2?
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Green
Left Front Speaker Negative Wire (-): Green/Yellow
Right Front Speaker Positive Wire (+): Purple
Right Front Speaker Negative Wire (-): Purple/Yellow
Car Audio Rear Speakers Size: 6? x 9?
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Brown/Yellow
Right Rear Speaker Positive Wire (+): Blue/Red
Right Rear Speaker Negative Wire (-): Brown/Yellow

battery yellow
accessory red
ground black
power antenna blue
amp turn blue/white
illumination orange
dimmer orange/white
RF + gray
RF - gray/black
LF + white
LF - white/black
RR + violet
RR - violet/black
LR + green
LR - green/black

the parking brake wire just needs to go to a ground other than the ground for the deck and the orange reverse light wire you shouldn't have to worry about it if you turn on the deck and you still can't watch movies try hook it up to the illumination wire.

You should have a wire harness pigtail that comes with your kenwood.
you can also purchase a harness adapter plug/pigtail at most audio auto stereo shops to fit your car make and model.
Be sure to save the packaging because the plastic bag has the color/codes for the harness. This harness is designed to plug right into the factory plug inside the dash just like the stock radios do.
All you need to do is splice the kenwood cables to the adapter plug pigtail you purchase for your car.
match up each wire as described here:
1994 Buick Century Car Stereo Wiring Schematic
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 4′ x 6′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

This wire is for dimming of the display on your radio from your instrument panel in your vehicle. If your original wire harness in your vehicle does not have this wire, just tape it off and dont worry about it.

1992 Saturn SL2 Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ Wire: Orange
Car Radio Ignition Switched 12V+ Wire: Yellow
Car Radio Ground Wire: Black
Car Stereo Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amplifier Trigger Wire: N/A
Front Speakers Size: 6 1/2′
Front Speakers Location: Doors
Left Front Speaker Wire (+): Tan
Left Front Speaker Wire (-): Gray
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Dark Green
Rear Speakers Size: 6 1/2′
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Brown
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Dark Blue
Right Rear Speaker Wire (-): Light Blue

Constant 12V+ Black/Yellow
Switched 12V+ Red/White
Ground Black/Light Blue
Illumination Orange
Dimmer Pink
Antenna Trigger Orange/Red
Antenna Right Rear
Front Speakers 4" Doors
Left Front (+) Dark Green
Left Front (-) Brown/Red
Right Front (+) Purple
Right Front (-) Dark Blue/Red
Rear Speakers 6" x 9" Rear Deck
Left Rear (+) Brown/Yellow
Left Rear (-) Brown/Light Blue
Right Rear (+) Dark Blue/White
Right Rear (-) Dark Blue/Orange

http://inform3.kenwoodusa.com/manuals/kdcmp238.pdf

There are no illumination wires on this deck, so the Orange and orange/wht are not used on the wiring harness. Orange wire is NOT for memory. Yellow wire is +12VDC Constant for memory.

If you hooked up the 12Vdc to the orange wire, your fuse for your dashlights have blown. Check your cars fuse panel for a blown fuse.

The orange wires are sending a signal out to radios with illumination circuts. You just sent a 12VDC signal upstream and it collided with the Cars signal and blew the fuse.

Tape off the orange wires, and all will be fine after changing the fuse.