Someone fix Harley's goof up with the NIM module. You can also Unhook from the Roadtech as this unit should work with any of them.

Tap the Aux Circuit with a signal switch. Once signal is detected, complete the circuit that a 3.5mm plug completes when connected. This will switch the radio to Aux and play prompts, and or tunes. After 3 to 5 seconds break the circuit so that the radio returns to the position it was in previously.

I will beta test the product for you. You take all the credit and profits.

 

Call me direct to discuss 816-820-3046