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1. You need to be sure how many speakers you are operating, and on how many channels before doing the replacement install. For example, some volvo radios run the two dash speakers from the head unit and four channels from the amplifier--the CR-814, for example. Some run 6 channels from the head unit, with no external amplifier--the CR-915 is one of these. Many of the older volvo radios ran 2 channels from the head, with an amplifier plug for two or four channels.
2. Get the wiring diagrams for your car, and verify that they match what you actually have, when planning replacements. Your typical medium-priced glitzomatic radio runs four channels without an external amp. It would not be good to try to run speaker-level output from the new radio into the pre-amp level input of the volvo amp.
3. If you are going to install a non-volvo radio, it would be a good idea to get a volvo harness adapter for your wiring --this plugs into the car and has nicely-labelled wires to mate up with your new radio; it avoids cutting and splicing on your vehicle harness and making changes which might be inconvenient to reverse. Check the search function on the board under ...Scosche... or ...Metra... for a plethora of posts on the subject.
4. plan to spend some time using the search function here, and in looking at the FAQs. All of your questions, including the ones you need to ask but haven't yet, have been previously addressed at great length.
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We have met the enemy and they is us. [Pogo] S70 T5 cop car : Rough Rider suspension, Walmart fog lights, eBay speakers, ambiance by Pall Mall, trim by Le Duc d'Tape, 8-channel THD by OEM amps
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