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Cdm 1550 to smart siren

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cole_gerhardt

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Aug 3, 2008
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Hello i have a cdm 1550 i want to hook it to my federal signal smart siren i bought Cable 45 Speaker Ignition Motorola CDM CDM1250 VHF UHF plug and harness for the back of the radio i know ware the two speaker wires go but what is the ignition wire for whare do i need to run this to also will the speaker on the control head still work if i have audio coming out the siren speaker
 

ramal121

Lots and lots of watts
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The internal radio speaker will stay on regardless whether the siren PA is on or off. The ignition sense wire would go to a switched 12vdc power source. The function of the ignition sense wire is programmable by CPS. If your CDM works now as you want it, you do not have to hook this wire up.
 
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