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Question about Magnum 257 CB Radio

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Diesel #8-32 echo power mics

I have two Diesel #8-32 echo power mics. I need one wired to a 4-pin Cobra & the other to a 5-pin Cobra cb radio. Does anyone have the pin# to wire color for these radios?

Posted by cbtrader on

  • cbtrader Dec 29, 2008

    Thanks so much. with your help I,ve got it fixed

  • Anonymous Mar 18, 2014

    cobra cpia20 wiring -cb


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Cobra 4 pin is pin1= shield, pin2= mic audio (usually the shield is wrapped around the mic audio wire).pin 3= transmit or push to talk usually red or white whichever isnt wrapped with the shield, and pin4 = receive or speaker complete

5 pin cobra=1-Audio 2- Shield 3-Receive 4-Switching Wire 5-Transmit, you can jump pins 4 and two

Posted on Dec 28, 2008

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