Clarion VRX755VD LCD problem

It sounds like you are trying to install a Clarion PF3494 head unit into a 2001 Subaru Outback and you have run into compatibility issues. The Aerpro APP8CLA4 adapter you bought does not seem to fit your head unit.
In this situation, you have a few options:

1. Look for a custom installation kit: Some car audio retailers offer custom installation kits specifically designed for your make and model of car. You may be able to find a kit that includes the necessary wiring harness and adapter for the Clarion PF3494.
2. Check the Clarion website: Clarion may have information on their website about the wiring harness and adapter required for your specific head unit and vehicle.
3. Contact a professional installer: A professional car audio installer may be able to help you find the correct wiring harness and adapter for your head unit and vehicle, or they may be able to custom build the necessary wiring for you.

I recommend contacting a professional installer if you do not feel confident wiring the plugs yourself, as incorrect wiring can cause damage to your head unit and vehicle.
If you can provide the specific information about the pins and connections of the Clarion PF3494, I may be able to assist you further.

You can get free pdf copy of the manual on Crutchfield.com type in vrx755vd as a key word. you will find the file on the right hand side about half way down.

i have the same model its the green wire next to the earth wire bottom row make sure u earth it otherwise the unit can be frustrating at times!!!!

in the back of the unit where all the other wires are. they might be dangling out with the rest of the wires or they might be flush with the unit

follow this link http://www.crutchfield.com/p_020VRX755/Clarion-ProAudio-VRX755VD.html?search=VRX755VD&tp=20217 look halfway down the page and click on download owners manual it will also have the installation manual on there for the wiring diagram.

that is where its suppose to be connected it that you dont have it grounded properly

No wires are touching each other on door, harness etc.? disconnect each speaker from the harness one at a time, then use a 9v battery to test the speakers, if you get a feedback from speakers then they're good and wired properly. This should't be too hard. tell me where it goes from there...

Hi

its dificult to wiring your unit for a novice man! that What is call Convertion! If you have experience in electronics maybe i can tell to you how to wiring that in properly!

thanks!

http://www.clarion.com/us/en/MungoBlobs/752/342/VRX755VD-English.pdf

Well, it sounds like you need a new output IC, which is what produces sound to the speakers.