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If it has the Bose system you need to make sure you have the blue wire connected to power on the amplifier and that the amp is getting power.
If it's non Bose check that you have voltage on the red and yellow and the radio and a good ground on the black.
I'll post the wiring diagrams below. If I can help further just reply back.
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Thursday, March 7th, 2019 AT 8:09 PM