Why factory AMP does not have sound after install HY-SS-04 interface?
HY-SS-04 interface is used for Hyundai and Kia vehicles with factory AMP.
Usually, there are two factors that might cause the issue of no sound:
1. Make sure the wiring harness you used is correct .
2. Make the Headunit you use that already embeded our control protocol.
3. Make sure the CANBUS protocol you selected is correct
If three points above are ensure correctly, the vehicle might be with new different control protocol, please let us know , we will teach you how to test CAN data, getting CAN data, we can update the software for your try.
PS: We need below information for check:
1. The wire location of each connector
2. The rear panel of factory radio with model label
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