Hello all. I've recently installed the deh p7700mp unit in my truck. I have the wiring harness connected and have installed several stereos in the past. For some unknown reason tho the right rear speaker doesn't work. No distortion or anything. Was wondering what this could be and if there is any way to fix this problem? Thanks for the help
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Re: right rear speaker not working
Start by connecting it to one of the other outputs off the deck, say the left rear. If it still doesn't work, remove the speaker and connect it directly to the head unit. If it works, then it's the speaker wire, if it doesn't, it's the speaker. If there are amplifiers installed, switch RCA cables left for right etc. and see if the problem moves with the cable switch, try the same with the speaker connections at the amp. This will narrow down whether it's the amp or the RCA cable etc. Car audio problems can be handled by a process of elimination! Eliminate what it's not and you're pointed directly to what it is.
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2002 Oldsmobile Alero Car Radio Stereo Audio Wiring Diagram
Car Radio Constant 12v+ Wire: Orange
Car Radio Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger: Dark Green
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
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: N/A
Car Audio Rear Speakers Location: N/A
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
On your Alero, the 12V constant wire is ORANGE and should connect to the YELLOW wire coming from the DEH-2300 wiring harness. 12V switched on your Alero is YELLOW and should be connected to RED coming from the DEH-2300.
Remove the speakers and trace the signal pairs (wires) to their origin, maybe they are still factory harnessed where you can access a connection point behind the head unit. Here are the factory color codes .
Hope this helps Aduz
P o w e r
Memory (+12v Constant)
Ignition (+12v Switched)
S p e a k e r s
Right Front (+)
Right Front (-)
Left Front (+)
Left Front (-)
Right Rear (+)
Right Rear (-)
Left Rear (+)
Left Rear (-)
The wiring colors are the same on all major brands of head units it goes a following: Red: swtiched +12 Yellow: constant +12 Black: ground Orange/white: dimmer Yellow/black: cell phone mute Blue/white: amp turn-on White:FL speaker + White/black:FL speaker - Gray: FR speaker + Gray/black:FR speaker - Green: RL speaker + Green/black: RL speaker - Violet: RR speaker + Violet/black: RR speaker - I hope I could help. Good luck -Andrew Hawkins
hey, either the face plate isn't getting good connection with the unit so you need to clean the connection gold plates or your just on a blank screen and you can fix that by pressing the knob in until the screen says Entertainment, then scroll thru the possible screens until you choose one you like.
Did you check the fuse with a ohmmeter. fuses that small are realy hard to see... just check the continuity between the two termanils on the fuse, there should be continuity.
Check your fuse panel of your car or truck, maybe it poped a fuse there. Physically check the power input with a votimeter and see if you have your 12 volts to the unit.