Car wont start oe even crank.

Hi, you can usually buy a stereo wiring harness that plugs right into your car and they are color coded to match the standard aftermarket wire radio harness, all you do is take the plug from your new stereo and match the wires with the adapter, just connect the matching wire colors. it's super easy and well worth the $15-20, and you don't have to cut up your factory harness.
good luck!

use an adapter,do not cut factory wiring harness!!!!!!!!!!!! plug right into the factory plug,get your adapter here or find one online,dont forget your antenna adapter too,walmart also carries the adapters, Car Stereo Installation Parts for2001 VOLKSWAGEN PASSAT4DR 5DR SDN WGN GLX

Hi Chad,

If you cut the car's radio connectors off the wiring harness, you'll void the warranty of the car (or worse). Trying to splice or "tap" the wires will get confusing even if you don't connect the blue wire with the white stripe to the white wire with the blue stripe.

Do yourself a huge favor and purchase a wiring harness adapter for your 199 Passat instead. Crutchfield sells one for your car for $10. Likewise, most electronics stores that deal witrh mobile installs have them too - check out Best Buy, Circuit City, Fry's and even your local independent radio shops.

You wire the new radio's harness to the harness adapter for the car in the comfort of your home (the light is better and you don't have to contort yourself to do the work). When complete, bring it out to the car and plug one end into the car, and the other into the radio. Insert the antenna plug and you're done wiring!

If you want a wiring diagram, those usually aren't available online for free. You need to spend a few dollars for a Chilton's Auto Repair Manual or similar at an autoparts store. You may find registering at a site for Passat Enthusiasts will be beneficial.. all the folks there have Passats and discuss everything from tire sizes and rims to transmission rebuilding. One such site is the "Forum" section of Passat World.

I hope this helps & good luck!

Buy a metra dash kit and it will have step by step instructions,you will need harness too ,donot cut factory wires.!!!!!!!

here are the wire colors and what each does.
1994 Isuzu Rodeo Car Audio Wiring Guide
Car Radio Battery Constant 12v+ Wire: Red/White
Car Radio Accessory Switched 12v+ Wire: Brown/White
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red/Green
Car Stereo Dimmer Wire: Red/Yellow
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 4′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Blue/Yellow
Left Front Speaker Negative Wire (-): Yellow
Right Front Speaker Positive Wire (+): Green/White
Right Front Speaker Negative Wire (-): Gray/White
Car Audio Rear Speakers Size: 4′
Car Audio Rear Speakers Location: Side Panels
Left Rear Speaker Positive Wire (+): White
Left Rear Speaker Negative Wire (-): Red/White
Right Rear Speaker Positive Wire (+): Orange
Right Rear Speaker Negative Wire (-): Black/Orange

There is a plug unit that will greatly help you. It plugs into the factory harness and into your Prioneer unit. Walmart sells them as do most stereo shops, costs around $8. Money well spent and will save you much time and effort, not to mention you wont have to cut up the factory harness! Best Regards

Replace the CD player. To pull the plastic baffle off the dashboard: Adjust the heating vents so they point downwards. Grab the plastic bar between the heating vents and the stereo. Pull. Remove the screws from the front of the mounting brackets. Pull out the crappy stereo. Unplug the antenna and the wiring harnesses. Transfer the mounting brackets to your new stereo. Cut off the big wiring harness (unless you're lucky enough to have a replacement stereo that accepts the same kind). Connect the wires to the wires on your new stereo's harness. For more info: check the website: http://tomclegg.net/toyotastereo

PLEASE RATE MY SOLUTION, THANKS.


1996 GMC Truck Factory
Stereo Wiring Chart
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: N/A
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

You need to attach the blue wire on the stereo harness to the blue and white wire on the car adapter harness. they installed a small amplifier to power the rear door speakers and unless you connect those two wires then the speakers will not work.

you should never cut the wires on your factory harness... metra and other companys have harnesses that fit your car and would provide you with a correct wire color code you need to hook up a aftermarket stereo keep that in mind but i will post the wire diagram u are looking for