Taneishathe colors dont match from the radio already in the car to the new one i brought and do i have to cut the wires already in the car

Reconnect all cut wires should be color coated match them back should be fine. Make sure wire color connection match same color.

Go to the auto parts store and get a wire adaptor made for a 1992 trueno. It will plug into your factory harness. The wire colors are prematched to your sony and other aftermarket stereos. Just match the wire colors, splice with connectors making sure no wires are exposed. (A little electrical tape for good measure around splices helps). Then it just plugs in. If your factory stereo has mounts that screw onto the radio, unscrew them and attach them to the sony. Remove sleeve from radio and discard. The screw holes are already on the sony.

So you purchased another radio, right? Then it came with the harness already(for the radio and not the car). If the current radio is the factory radio then you need to purchase a wiring harness for the model/year of your car that will be compatible with your car's harness. Wal mart carries some but if you can't find it there then you need to go to your local car audio installation shop and buy one from them(it might be pricey there). Now, if your current radio is aftermarket, look to see if it already has the wire harness in the back. If it does then your good to go, just cut the harness from the radio away from the harness that plugs to the car's wire harness and reconnect using your new radio's harness(just follow the wire's color code). but if it doesn't then you need to buy one.

This is the most common problem with self installs.The best thing to do is to get the car radio installation plug,it will plug into the factory plug for your factory radio and will give you a color coded pigtail to wire into that usually matches up perfectly with new aftermarket car radios.If the wires are already cut then you best bet is to extend the wires so that they are easy to work with hookup the power,ground,antenna and try dirrerent combos to isolate each speaker and label the wires accordingly.

The auto and radio Dons have blessed us with a universal color code for all vehicles-that I've noted in all the systems that I've changed. If you're swapping out the stock Chrysler system you'll need to go to Walmart-or a store that sells audio equipment-to buy the Dodge/chrysler/jeep adapter. You connect it to the factory connect and splice the same colors to the radio. Most times the wire have the speaker it goes to written on it. If you have already cut the connector off and can't reconnect the wires, just match up the wires with the matching colors. Hope this helps.

the easiest way to install a new radio is to get the wiring harness adapter for your vehicle it runs about $25 and then you do not have to cut the factory harness. the wiring codes will come with the new harness and is just matching up there color code to the new stereos color code.

Radio Constant 12V+ Wire: White/Green
Radio Switched 12V+ Wire: White/Red
Radio Ground Wire: Black
Radio Illumination Wire: n/a
Radio Dimmer Wire: Red/Black
Radio Antenna Trigger Wire: n/a
Radio Antenna Location: Rear Glass
Front Speakers Size and Location: 6 1/2′ Doors
Left Front Speaker Wire (+): Blue/Green
Left Front Speaker Wire (-): Gray/Black
Right Front Speaker Wire (+): Red/Green
Right Front Speaker Wire (-): Brown/Black
Rear Speakers Size and Location: 6′ x 9′ Rear Deck
Left Rear Speaker Wire (+): Blue/Yellow
Left Rear Speaker Wire (-): Gray/White
Right Rear Speaker Wire (+): Red/Yellow

you will have to go to the gm garage and ask for the wiring diagram to match the wires up. but the way to fix it the right way is to go to the junk yard and cut the harness out of a car and splice the wires back together then go to wall mart or best buy to get the right wiring adapter then you can match them colors up to your new radios wires and plug into your car

Best thing to do is purchase a Radio Wiring Harness. These can be purchased at a Store like Circuit City, Best Buy, WalMart (not sure of your location) or a 12 Volt Specialty shop.

This harness will connect to your new radio harness and plug directly into the vehicle harness without having to cut wires. The Radio Wiring Harness will come with color identification to match to your radio harness.

FYI http://www.installdr.com/QuickWiring.html