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· Registered
2,729 Posts
You need 4 things for the radio to power up.
A working radio.
12 volt source.
Switched 12 volt source.
A proper ground.
It sounds like you have 2 of those.
A ground for sure.
A working radio.
You will a digital multimeter to read the DC voltage in the harness.
Find what you are missing and then find a way to get to the radio.
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