Make your car stereo install easy with our 1978 Porsche 928 car stereo wiring diagram. Use the 1978 Porsche 928 car radio wiring diagram below to complete your car stereo installation. Our car wiring diagram tells you what every wire in your car stereo wiring harness does.
The Modified Life staff has taken all its Porsche 928 car radio wiring diagrams, Porsche 928 car audio wiring diagrams, Porsche 928 car stereo wiring diagrams, Porsche 928 car radio wiring schematics, Porsche 928 car wiring diagrams and cataloged them online for use by our visitors for free. Our automotive wiring diagrams allow you to enjoy your new mobile electronics rather than spend countless hours trying to figure out which wires goes to which 1978 Porsche 928 part or component.
Feel free to use any Porsche 928 car stereo wiring diagram that is listed on Modified Life but keep in mind that all information here is provided “as is” without any warranty of any kind and most of the car audio wiring diagrams listed on our enthusiast website are submitted by the Modified Life community. Use of the Porsche 928 wiring information is at your own risk. Always verify all wires, wire colors and diagrams before applying any information found here to your 1978 Porsche 928.
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1978 Porsche 928 Car Stereo Wiring Diagram
| Application | Wire Color |
|---|---|
| Car Radio Battery Constant 12v+ Wire | Yellow |
| Car Radio Accessory Switched 12v+ Wire | Red |
| Car Radio Ground Wire | Brown |
 Use a Car Radio Wiring Harness and Car Radio Dash Kit for an Easy Install! |
|
| Car Radio Illumination Wire | N/A |
| Car Stereo Dimmer Wire | Blue |
| Car Stereo Antenna Trigger Wire | White |
| Use an Amp Integration Harness to Connect Your Factory Amplifier to an aftermarket radio. |
|
| Car Stereo Amp Trigger Wire | N/A |
| Car Stereo Amplifier Location | N/A |
| |
|
| Front Left Tweeter Positive Wire (+) | N/A |
| Front Left Tweeter Negative Wire (-) | N/A |
| Front Right Tweeter Positive Wire (+) | N/A |
| Front Right Tweeter Negative Wire (-) | N/A |
| |
|
| Front Left Speaker Positive Wire (+) | White |
| Front Left Speaker Negative Wire (-) | Black |
| Front Right Speaker Positive Wire (+) | White |
| Front Right Speaker Negative Wire (-) | Black |
| |
|
| Rear Left Speaker Positive Wire (+) | White |
| Rear Left Speaker Negative Wire (-) | Black |
| Rear Right Speaker Positive Wire (+) | White |
| Rear Right Speaker Negative Wire (-) | Black |
| Use a Steering Wheel Control Adapter to Keep Your Steering Wheel Controls. |
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