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get a universal wiring harness then you get what every car you have universal harness and plug them together
talk to a car accessory shop about this universal wiring harness for the alpine unit and then ask if you need a universal harness for the car you have .
The orange wire connects under the tape cassette deck there are two pointed lugs under the tape deck on the left and right hand side - slide cable over and the other black wire is a cable tie and connects to the right hand side of the cassette bracket and ties the cables coming from the cassette heads to the cassette deck. Remove the screw and push the screw through the loop and put it back where it was
Confirm this wiring for 2000 Nissan Altima Car Stereo Radio Wiring Diagram
Radio Constant 12V+ Wire: Pink
Radio Switched 12V+ Wire: Blue
Radio Ground Wire: Chassis
Radio Illumination Wire: Red/Green
Radio Dimmer Wire: Red/Yellow
Radio Power Antenna Trigger Wire: Green/White
Radio Amplifier Turn On Trigger Wire: N/A
Front Speakers Size: 4′ x 6′ Speakers
Front Speakers Location: Doors
Left Front Speaker Wire (+): Brown
Left Front Speaker Wire (-): Black/Red
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Black/Yellow
Rear Speakers Size: 6 1/2′ Speakers
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Orange
Left Rear Speaker Wire (-): Black/Pink
Right Rear Speaker Wire (+): Blue
Right Rear Speaker Wire (-): Black/White
First thing you will need to do is to buy a wire adapter for your specific make & year of car. This interfaces the stock wiring plug allowing you to connect the wires from the headunit to the wires of the plug.
Here is a color coding explanation for the wires on your Alpine Deck:
P o w e r
Memory (+12v Constant)
Yellow
Ignition (+12v Switched)
Red
Ground (-)
Black
Dimmer
Pink/White (Alpine only)
Power Antenna
Blue
Amplifier Turn-on
Blue/White
Phone Mute
Light Blue (Sony only)
S p e a k e r s
Right Front (+)
Gray
Right Front (-)
Gray/Black
Left Front (+)
White
Left Front (-)
White/Black
Right Rear (+)
Violet
Right Rear (-)
Violet/Black
Left Rear (+)
Green
Left Rear (-)
Green/Black
Here's the color codes for the wires.
Blue=power antenna
Blue/white=remote turn on for amp
Red=ignition
Yellow=battery
Black=chassis ground
Grey=right front (+)
Grey/black=right front (-)
White=left front (+)
White/black=left front (-)
Violet=right rear (+)
Violet/black=right rear (-)
Green=left rear (+)
Green/black=left rear (-)
RCA Connections:
Red=right rear to amp
White=left rear to amp
And that should be all the wires. Good luck!
This is a pull-out deck, and should have the wiring schematic right on the chassis.
If it is illegible, you can use the standard wiring to wire it up as follows....
Yellow: Constant 12V Power
Red: Switched 12V Ignition Power
Black: Ground
Orange: Dimmer
Blue: Remote and/or Power Antenna turn on
Green/Black: Left Rear +
Green: Left Rear +
Purple/Black: Right Rear -
Purple: Right Rear +
White/Black: Left Front -
White: Left Front +
Grey/Black: Right Front -
Grey: Right Front +
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If the alpine 8020 is a deck(head unit) the wire diagram is as followed:
Red: Accessory Yellow: Constant Power Black: Ground Orange to orange/white is a illumination or dimmer wire. White: front left speakers Grey: front left (white black and so on usually the negative on the speaker connections) Purple rear left (purple black = neg) Green: Rear Right And if a video deck(light green is park brake) (which is usually just a ground) so legally it needs to be on your park brake but can be grounded to make it work.
Speakers? (Terminals larger one is positive, smaller one is negative) Place capacitors on if needed to filter out and clear up bass
Hope this helps couldn't look uo what a alpine 8020 was..
The radio either does not have the yellow power wire connected(constant 12v) or the wire is connected to a switched source and when the key is turned off the radio has no backup power. You will need to pull the radio out and verify the yellow wire is not connected to switched voltage and connected to constant power. It is also possible that they have the red and yellow wires mixed up. Remember yellow constant power and red is switched power(with ignition key). And also disconnect your negative battery cable when working on the electrical system of your vehicle...you may short something out and damage your vehicle's electrical system or head unit.
facing the back of the 7940 the top left corner is pin 16 the top right corner is pin 9. The bottom left is pin 8 and the bottom right is pin 1. Only a few of the 16 pins are used due to this unit only having pre-outs, no internal amplifier on this unit. Pin 1 red (ignition), Pin 2 pink/black (interrupt), Pin 3 orange (Illumination), Pin 8 black (ground), Pin 9 blue (power antenna), Pin 10 blue/white (remote turn on), Pin 16 yellow (battery).
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