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Just installed a new jvc kd-s48 stereo and it cuts out for a half a second every couple seconds. Kind of like a scratched cd but it's with the tuner and mp3. The sound "stumbles" and then it very quickly raises back up. it sort of seems like if I wiggle the wires in the back it'll stop. I will check all connections, I use female and male spade connectors and then shrink wrap over each connection. Any ideas? Could it be a faulty deck?
Ok after more driving I found that the volume gets quieter and it stumbles when I accelerate or rev. If I'm sitting at a stop then it's fine. Is this a ground problem? I have constant 12v yellow wire wrapped around a fuse in the fuse box for the time being, I think this could be the problem?
This could be any number of things most likely related to the install wiring. the B+ constant sounds like trouble waiting to happen but shouldn't cause this, it's mostly for memory. The switched 12v+ is the real power.
I suggest getting a dedicated Scosche harness for your vehicle & rewire the deck permanantly to it, then just plugging into the existing harness.
Stuff like this happens all the time with diy installs & usually clears up when the wiring is cleaned up.
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