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EFI Wiring Fundamentals

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Discussion and questions related to the course Motorsport Wiring Fundamentals

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Hey guys!

Need some help. My Motorola Radio Keys Up via MoTeC PTT but Transmits No Audio on RE Harness

Radio: Motorola

Harness: Racing Electronics 3 pin connector.

When I push the PTT, the receiving radio hears the squelch break, but there is zero voice audio. The system works perfectly with a handheld mic/headset outside the car harness. I do not know what I am doing wrong!

How is your helmet wiring -- that is where the microphone is located. The PTT button does not have the audio passing through it.

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