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Look closely at the jack for the microphone and you can see the small numbers that are on it. On the Roadking red and shield (bare) go to 1. White 2, Blue 3, black 4 and the yellow in the cable does not connect to anything.
Turner 1-Shield & Red 2-White 3-Blue 4-Black Yellow NC Road King standard 4 pin wiring Gallaxy/ranger/cobra..............Magnum I have no info on the 5 pin as i know the OmegaForce version has an addition mic plug, i figure yours might also.
Here are the Pin outs for different mics that will work with your radio. If a wire is not listed then you cut it off. It's best to keep the wires as short as possible no longer than a half inch is suggested. Normally the Cobra pin out is standard for most radios.
Stock - 1- Shield (Ground) 2- Yellow (Audio) 3- Red (Transmit) 4- White (Receive)
Astatic - (4 wire) 1- Shield 2- White 3- Red 4- Black
Astatic - (6 wire) 1- Shield & Blue 2- White 3- Red 4- Black Yellow NC
Daiwa EM-500, Cobra, CA Series - 1- Shield & Black 2- Red 3- White 4- Blue
Galaxy DC-521S - (4 wire) 1- Shield 2- Yellow 3- Red 4- Black
Galaxy CB-660EI - 1- Shield & Black 2- White 3- Red 4- Blue
Sadelta - 1- Shield 2- White 3- Brown 4- Green
Turner - 1- Shield & Red 2- White 3- Blue 4- Black Yellow NC
Here is the wire diagram for several common mics in relation to a 4 pin CB. Most recent 4 pin CB's such as Midland, Cobra, Connex, Uniden, etc can use 4 pin mics. The wiring is actually depending on the mic rather than the CB so long as the CB's are 4 pin as well. Once you go back to late 80's the 4 pin design was a little different. Anything new it is simpler.
1- Shield (Ground)
2- Yellow (Audio)
3- Red (Transmit)
4- White (Receive)
Astatic - 4 wire
static - 6 wire
1- Shield & Blue
Cobra CA Series
1- Shield & Black
Galaxy DC-521S - 4 wire
1- Shield & Black
Turner RK56 Road King
1- Shield & Red
if you have a cobra radio with four pin input and a turner road king 56 it goes like this. pin one shield and red wire,pin 2 white,pin 3 blue,pin 4 black and tape up the yellow wire it isn't used. the numbers should be on the plug if not look inside your jack on your radio. hope this helped