Electrical schetmatic electrical diagram and mic plug in pin sequence

look up microphone wiring diagram for your cb and mic. more than one way to wire, depending on mic and cb having 4 or 5 on plug end. write down mic numbers and cb plug numbers. if audio on mic is 3 and cb is 4 put 3 on 4 pin check each wire. using power mic make sure red and black wire are on the right pin, can damage radio or mic or both.

the best i can find is this
red pin 5 ptt
black pin 4 ptt ground
white pin 1 mic
shield pin 2 mic ground
no connection pic 3

The Heil "ICM" microphone is designed to be used with certain Icom brand ham radios. These have a 8-pin round plug. Describing the pinout to you will depend upon your perspective, whether you are looking at it from the microphone plug itself, or the microphone socket on the front of the radio. Therefore, from the perspective of looking at the mic plug on the end of the mic cable, note that there is a notch or dimple in the plug that also lines up with the screw. Going clockwise from the notch, the pins are numbered 1 thru 7. Pin #8 is the center pin.
Pin 1 = mic input
Pin 5 = Push-to-talk (PTT)
Pin 6 = PTT ground
Pin 7= Mic ground

From the standpoint of an Icom transceiver, the remainder of the mic connector pins are as follows:
pin 2 = +8 volts DC (output from the radio)
pin 3 = frequency control up/down
pin 4 = squelch switch
pin 8 = audio output (level varies w/vol control)
Hope this helps

first,a realistic plug is a 5 pin D.I.N. type and a cobra 25 is a 4 pin screw on . If you are trying to save $$ by using an old mic then let me say that you can get them prewired real cheap.

You could potentially short circuit something, but most likely if it's wrong you'd blow a fuse. Google 95 Altima distributor connector and see if a picture shows the wire colors, and plug them back in matching the picture, or check ebay/amazon for a new one. Could be called Distributor connector, distributor wiring harness, distributor pigtail, distributor electrical connection, ect.

why not just purchase a 5 pin for it?

I would suggest shipping the unit in with the mic and let me do it for you. www.dodgem250.com

try http://www.cbtricks.com/
they have mic wireing diagrams

Hi, here are a couple of links to diagrams for the connections for the standard pin connections for 4 pin CB radio mic assembly

http://cbworldinformer.com/images/0107/2547_mic_schematic.gif

http://www.cbtricks.com/radios/galaxy/dx55v/graphics/55v_mic_wiring.gif

Hope this helps, hope you are nifty with a soldering iron, good luck!

Same as Omega
#1 Mic Audio
#2 Receive
#3 Transmit
#4 Up/Down for channels
#5 Ground/Shield
#6 13 volt