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An expert who has answered 20 questions.
Re: unlock car stereo
Code Locked ? It will probably halve to come out to get the serial # Then be real nice to the dealership, It might be as simple as knowing what buttons to push and in what order. however they might have to send it in to retrieve the code from the PROM. Sumthin
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This usually involves removing the plastic bezel around the stereo. Sometimes these plastic bezels hold some buttons for air conditioning and heat, as well as the hazard lights button. These plastic bezels usually are just snapped in with metal clips on the back of them. You can pry them outward and with a good yank they will pop out. Once you have the plastic bezel around the radio removed, there will be 2-4 screws on the sides, or top and bottom. Once you remove those, the whole radio will pull right out of the dash. Then you have to un-clip the wire harness from the car, and unplug the antenna cable. If you plan on putting a different stereo in the car, KEEP the mounting bracket around the stereo, as well as the "wiring harness" that was used to plug into the vehicle harness. That will save you about $50 in parts to put a new stereo in.
What i would do is remove the amp and do a bench test. connecting it to a car stereo outside of the car This way you know it works or not without second guessing the wiring. I leave a Car battery on my bench for this.
you will need to get whats called a line level converter. This device takes a channel from your factory stereo, pads the level down to a reasonable level your amp can take without causing clipping. You can then use your external amp and subwoofers. One major problem with low quality line level converters is alternator hum. Just a warning. Good luck
Purchase a line output converter (LOC) such as the PAC SNI-45T shown here. Tap the LOC inputs into your rear channel speakers and run RCA's from the LOC to your amp. The unit shown in the link also has a trigger wire that you connect to the remote terminal of your amp. You can get a cheaper LOC and just run a switched 12V source to the amp if you wish.
The radio will have to be removed from the car dashboard .Then please quote the MAKE + MODEL of your radio plus ALL the LETTERS and NUMBERS on any LABELS , BARCODES or STAMPED IN THE METAL CASING. Also quote the MAKE of CAR it is fitted into. Please note: Not all stereo codes can be calculated from the Serial Number
This is a dealer problem. The point of the code is to keep someone from stealing the radio. If you don't have the original manual with the code sticker, then you will have to take it to a dealer. Some nice service managers will give you the code for free with proof of ownership. Others will charge as much as $50 for it.