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Old 10-11-2009, 10:55 AM
Join Date: Aug 2008
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Default Cdm 1550 to smart siren

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
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Old 10-11-2009, 11:49 AM
Join Date: Sep 2004
Location: NJ USA (Republic of NJ)
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Default FYI - check out the batlabs web site

Did you check on the batlabs site? See below

HT750/1250/1550/PRO5150/7150/9150/GP320/340/360/380/ GP318/338/GP640/680/1280/CDM750/CDM1250/CDM1550,etc.

Scroll down to the accessory pin chart and use what you need.
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Old 10-11-2009, 12:03 PM
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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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