rem turn on always hot, but less than 12v

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=128993
Printed Date: May 15, 2025 at 12:47 PM

Topic: rem turn on always hot, but less than 12v

Posted By: radarcontact
Subject: rem turn on always hot, but less than 12v
Date Posted: October 28, 2011 at 10:52 AM

On every wiring diagram I can find for my car (2006 BMW E46 330Ci Convertible) it shows the white solid wire, #10 in the grey connector to be the radio to factory amp turn on lead. BUT when I check it, the wire is hot with ~10.5v as soon as the car is put in accessory, with no difference when the radio is energized, still ~10.5v. I tried every other pin and none have any power (12v or even close) once the radio is turned on. There isn't a power antenna either on this car, strangely.

Anybody have experience here??

Thanks,
Radar

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RadarContact

Replies:

Posted By: blanx218
Date Posted: October 28, 2011 at 10:42 PM

Directechs show a black wire in pin 13 of a 16 pin plug at the radio

Posted By: radarcontact
Date Posted: October 29, 2011 at 12:55 AM

blanx218 wrote:

Directechs show a black wire in pin 13 of a 16 pin plug at the radio

Ok, that's good info. Thank you!

I have complete access to the other, amp plugs, side of the wiring. Did you happen to see anything there?

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RadarContact