Can't hard wire my radar detector - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 06-19-2013, 10:11 PM
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Can't hard wire my radar detector

Hey guys,

I'm new here so bare with me.

I have been trying to hardwire my radar detector to my car so the cord is not in the way. I was told to tap into a couple of electrical cables near the top driver light by the sunroof. So far nothing changed

Does anyone have experience in successfully doing this?
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#2 (permalink) Old 06-20-2013, 11:54 AM
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What car do you have? What is the voltage required by the radar detector?

The power supplied by the sunroof motor is 12v. If you need to step it down for the detector then you will need something like this:
1pcs 12V TO 5V DC DC Converter Regulator 3A 15W CAR LED Display Power NEW | eBay


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#3 (permalink) Old 06-21-2013, 12:36 AM
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Run a positive to the battery, ground off near the sunroof, have a separate switch for radar detector as to not run the battery down! Simple electrical, I added a phone charger for my phone from the old flashlight wires, not that hard!
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#4 (permalink) Old 06-22-2013, 06:20 PM
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If you splice into the sunroof power wires then the radar detector will only come on with the ignition so you wont have to worry about the battery dieing.


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