Boss Audio MGR350B Support Question
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Question posted by Williammidgettt on May 22nd, 2021
Unit Is Wired Up And New But Will Not Light Up The Screen Or Respond At All
Current Answers
Answer #1: Posted by techyagent on May 22nd, 2021 2:46 PM
The power harness of our In-dash units is all color-coded to properly identify the purpose of each wire.
- BLACK - connects to the vehicle GROUND or the negative polarity of the Battery
- RED - connects to a SWITCHED +12VDC, normally to an ACC line of the Ignition Switch
- YELLOW - connects to a CONSTANT +12VDC
- BLUE wire - connects to the REM line of a Switchable product such as Power Amplifier or the Power Antenna, as applicable. Because it has a +12DVC output when the radio is on, it is best to cap it or tape it
Please confirm the Red & Yellow wires are connected. The unit requires 12VDC + on both RED and the YELLOW wires otherwise, the unit will not turn on. If you have a Multi-Meter handy measure the voltage for both wires.
3 possible things can be happening as to why it's not turning on
- Low Voltage on either the RED or the Yellow wire.
- NO Voltage on either the Red or the Yellow wire, maybe both.
- Bad or No Ground Connection.
Extra safety precaution is always necessary when dealing with the vehicle's electrical wiring and it is better to be done by an expert professional installer.
Thanks
Techygirl
Answer #2: Posted by SonuKumar on May 23rd, 2021 7:50 AM
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Regards,
Sonu
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