If the C12 unit does not power on after installing the wiring harness, please follow the steps below to diagnose the issue.
1. Check the Fuse
- Verify whether any fuse is blown or damaged
- Replace it with the same specification if necessary
- Please check the following fuses in order of priority:
RADIO → ACC/IGN → ECU-IG → CIG
2. Check Wiring Harness Connections
- Ensure all connectors are fully and correctly inserted
- Pay special attention to the power harness labeled “028” (the set with fewer connectors)
Important note:
This harness includes two similar-looking plugs. If they are connected incorrectly, the C12 may fail to power on.
In most cases, the correct connector to use is the gray plug.
Summary
In most cases, if the fuse is intact and the wiring harness is correctly connected, the C12 should power on normally without any issues.