Radio Replacement Help [Archive] - Chevy Malibu Forum: Chevrolet Malibu Forums

: Radio Replacement Help


fitzpats
09-18-2011, 07:19 PM
Hey guys. Looking for a little advice. I was attempting to replace the head unit in my father-in-law's car, and wasn't getting power for a bit. Now, the only way to get power is tying the red wire (ignition) and yellow wire (battery) together. However, when the engine is shut off, it loses all presets. I'm assuming it's a head unit issue right now, but could it be an issue with the constant flow from the battery? No known blown fuses, as I've already check them all with a 12v tester. Let me know where you think I should look. Thanks.

chevyguy8893
09-18-2011, 07:52 PM
What year is the car and the trim level to have an idea of what the car is equipped with.

greenman
09-18-2011, 08:11 PM
I was attempting to replace the head unit in my father-in-law's car...

Are you replacing an OEM head unit with another OEM head unit?

greenman
09-18-2011, 08:22 PM
I was attempting to replace the head unit in my father-in-law's car, and wasn't getting power for a bit. Now, the only way to get power is tying the red wire (ignition) and yellow wire (battery) together. .

Wasn't getting power to the radio? You need to be more specific.

Joeyavhu
09-18-2011, 09:22 PM
The yellow is a speaker wire. The red is power. The dark green wire is your acc power.

Joeyavhu
09-18-2011, 09:23 PM
Car Radio Battery Constant 12v+ Wire: Red/White
Car Radio Accessory Switched 12v+ Wire: Dark Green
Car Radio Ground Wire: Black/White
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: Pink

Left Front Speaker Positive Wire (+): Gray
Left Front Speaker Negative Wire (-): Tan
Right Front Speaker Positive Wire (+): Dark Green
Right Front Speaker Negative Wire (-): Light Green

Left Rear Speaker Positive Wire (+): Yellow
Left Rear Speaker Negative Wire (-): Brown
Right Rear Speaker Positive Wire (+): Light Blue
Right Rear Speaker Negative Wire (-): Dark Blue

fitzpats
09-19-2011, 04:58 AM
Sorry guys. Dumb of me to leave the basic info out of it. I believe it is a 2000 Malibu LS trim(?). It's a rather basic set up. Going from after market unit to after maket unit. I replaces the oem with an after market a few years ago and the head unit recently stopped working, and that is why I am replacing again. When I mention colors, it's from the unit to the wiring harness that converts the oem wires to the after market. the big problem that I am having is the lack of continuous power to the unit from the battery to maintain power and memory. Hope this helps, and ask me if more info is needed. Sorry for being such a noob. Thanks.

Joeyavhu
09-19-2011, 11:47 AM
Here is the diagram for your model

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: Dark Green

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

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

Joeyavhu
09-19-2011, 11:52 AM
It would be unlikely that something is wrong with the radio itself and the wires running through the car, as its probably the least complicated wiring in the whole car, ie, no computers, just power and wire, the rest is controlled through the unit itself. It is more likely how everything is hooked up.

Check your wiring and any connections you made. If you used electrical tape and twisted them together, thats probably the problem, the problem being a lack of experience and proper tools. If thats it, just keep trying, get some crimp connectors or solder and try again.

Good luck with it all, just dont give up!

Also, some systems require a Anti-theft bypass, but if you already had an aftermarket, thats most likely not the case either.

chief_bignut
09-19-2011, 11:06 PM
mine (05 classic) using a harness that will plug into the factory end, came with a red wire not attached to any pin in the plug. that red wire will connect directly to the harness that leads INTO your aftermarket radio. the other end will need to be connected to an accessory wire found on your ignition harness (i used the brown wire in the pic below (2nd ACC.))
http://i79.photobucket.com/albums/j121/tarponcowboy/acc2_10312.jpg

chief_bignut
09-19-2011, 11:12 PM
OH AND NEVER FORGET THAT THE BEST CONNECTION IS GOING TO BE A SOLDERED CONNECTION. if your soldering skills aren't great practice practice practice. its an easy skill to learn and when mastered makes things easier when dealing with electrical wires, especially in vehicles.

matthewstech
08-11-2012, 09:07 AM
I added Bluetooth to my wife's factory car stereo and this is how I did it.
(These instructions will also work for installing aftermarket stereos and amps.)

1. iSimple ISFM21 App Controlled FM Transmitter
http://www.amazon.com/iSimple-ISFM21-App-Controlled-Transmitter/dp/B005XUEMK6

2. Chevrolet Malibu 04-07 Stereo Removal Instructions
http://www.sound-repair.com/index.php/chevrolet-malibu-04-07-stereo-removal-instructions/

3. Know what the wires do
http://stereowiringdiagram.info/2005-chevrolet-malibu/

4. Retained Accessory Power source in a 2005 Malibu
http://kzcarfi.blogspot.com/2008/08/retained-accessory-power-source-in-2005.html

5. Littelfuse FHA200BP ATO Add-A-Circuit Kit
http://www.amazon.com/Littelfuse-FHA200BP-ATO-Add-A-Circuit-Kit/dp/B0002BGELQ/ref=pd_bxgy_auto_img_b

6. Go to step 2. and follow instructions in reverse order.

I hope this will help you guys out.

CMF Edit: Removed personal contacts from public post.