Hi all, I am trying to wire a dm-452 echo / power mike to a cobra 29 ltd I've seemed to have lost the echo side of it. Does anyone know the correct wiring schematic? Shield, black, red, white, blue are the wires available. Thanks

Should be #1 Ground (shield), #2 Audio, #3 Tx, #4 Rx. Good luck

its a 5 pin which all radshack radios are and they are all,99% anyway, wired the same . So take an old radshak mic apart at the plug and see how it is wired then experiment from there.

Cbtricks.com.

google it many sites have this info

ALLways start with ground. Find ground on radio pin with ohm meter. EVERY thing operates off ground. Once you find ground on radio....solder your ground wire on mike cord to corresponding # on mike jack. Once you have ground on proper pin then all else is elementary......use ohm meter to see which wires are TX and RX on mike.....last wire is audio wire.

I suggest buying a 5 pin to 4 pin adapter. Ebay has them for $6. I would go chopping wires on the mic. Cobra 29 ltd is a nice radio. Have one myself.

red wire 12 volt all time conected to power supply and orenge wire 12volt when is on and 0 volt when is off ,this wired are in on off switch.

this radio is made by PEIRCE SIMPSON and is wired like a cobra.
pin 1 shiels or ground
pin 2 is audio
pin 3 is transmit
pin 4 is recieve

shield is a bare wire wraped around the audio wire.i dont know the colors of the wires in the echo mic.the transmit wire will have contiuity with the shield wire when the mic is keyed that wiregoes to pin 3 . there should be 2 wires left. check these wires one at a time with the shield wire one will have contiunity . this wire will go to pin 4 recieve.the other wire will go with the shield wire on pin 1
this is the way you find how it wires. it will take an ohm meter to find whice wire goes where.

james morgan
morgans electronics

Hi and welcome to FixYa,

Pls click on the schematic diagram for a Cobra 29LTD.

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