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CDM1250 Ignition Sense bypass

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N1GTL

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Set them for On/Off & Ignition. They won't require the ignition sense to power up, but you will have to turn them on manually by pressing the center of the volume knob.
I could not agree with this more!!! If you ever set for ignition only, when (not if) the ignition circuitry in the radio goes bad, you can never turn it on.
 

Fire125

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I did not mention shorting pins 7 & 9 off the cuff. I do radio installs and repair as a profession every day at work. This is an un-documented method of bypassing the ignition sense. It works and I have radios on my bench and in the field in service that I have done this to. I did not make it up.
have you ever had any issues after a while with connecting pins 7 and 9? i just did it and it worked but i just wanna make sure it wont damage or cause any issues in long term!


Amir
 

mmckenna

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have you ever had any issues after a while with connecting pins 7 and 9? i just did it and it worked but i just wanna make sure it wont damage or cause any issues in long term!


Amir
As others have said, it's a work around, and only works if the pins are set up correctly. It won't hurt anything, but it's not a long term solution. The right way to set it up has been mentioned:
On/Off + Ignition sense in the programming. Pin 10 to ignition switched 12 volt source. Wire the power for the radio directly to the battery, do not use the cigarette lighter. Those are a serious source of RFI in most vehicles.
 
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