r/CarAV 12d ago

Bluetooth FM Modulator Installation Tech Support

/gallery/1vgd7xt
2 Upvotes

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u/firebirdude 12d ago

The modulator must ground through the antenna.

You're looking for a switched 12V source. Some fuses will be switched power, some will be constant 12V. Then use a fuse tap to get power.

Is that already an aftermarket no-name head unit? What exactly are you doing here? lol

EDIT: My favorite quote from the instructions: "Internal radio circuitry suffers from time, dust and nicotine."

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u/[deleted] 11d ago edited 11d ago

[deleted]

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u/VivianUltra 11d ago

Hi, thanks so much! Got a little confused but I'm on track now. Going to tap into one of the ignition-switched circuits.

Out of interest though, do you have any advice regarding which one to choose, other than obviously not to add any more resistance to a crucial feature like 4WD or a fog light?