Posted January 17, 201213 yr Installed a Sony (no comment) HU in a friend's car a few weeks ago, with no problems until another friend tried to replace the rear speakers. After which, the radio turn on wire does not function. To get the radio to turn on we have to wire both red (mem) and yellow (12+) to the 12+ constant. Checked every fuse in the vehicle, and smell no burned wires. If all else fails, we will simply run a new set of wires and re fuse them , but either way, i'd like to figure out what went wrong in the first place.1992 Saturn SL (The awesome kind )
January 17, 201213 yr Yellow is the memory (constant) wire and red is the 12V switched. Not the other way around as you have written in your post. Have you checked the 12V switched wire in the vehicle to verify it's receiving 12V when the ignition is turned on?
January 18, 201213 yr they have a fuse under the hood aswell.... somthing is telling me you dont have a DMM or a test light. NOTHING is wrong with a sony... depending on the model.. i run sonys in my wreckers...
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