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untill i find it exactly the eaiest way is to look at the wires cong into the radio. the ground will go directly to ground, that or use a multimeter to check for resistance. take you negitive lead and ground it to the chassis or internal ground where the power comes in to the board. using the ohm scale it will read 0 when you touch the red lead to the ground pin. once you find that pin you can take a wire and touch that ground pin to one of the other pins, when the radio transmits from on of the other pins being grounded thats your transmit pin. if it buzzes or makes sound when grounded thats usually the audio wire.

[QUOTE="Carl, post: 378966, member: 277"] untill i find it exactly the eaiest way is to look at the wires cong into the radio. the ground will go directly to ground, that or use a multimeter to check for resistance. take you negitive lead and ground it to the chassis or internal ground where the power comes in to the board. using the ohm scale it will read 0 when you touch the red lead to the ground pin. once you find that pin you can take a wire and touch that ground pin to one of the other pins, when the radio transmits from on of the other pins being grounded thats your transmit pin. if it buzzes or makes sound when grounded thats usually the audio wire. [/QUOTE]

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