Px-3994a-a Manual ~upd~ — Clarion
Go to . Post a high-resolution photo of the back of your PX-3994A-A (showing the connector ports) and the bare wire harness. State: "Need pinout for Clarion PX-3994A-A, no manual." Users will usually trace the PCB lanes for you within 24 hours.
: Secure the Black ground lead to an unpainted metal chassis point. Poor grounding causes audible ground-loop alternator whine. Clarion Px-3994a-a Manual
If your Clarion unit is not performing correctly, utilize this systematic troubleshooting checklist before seeking professional repair. Head Unit Will Not Turn On Clarion Px-3994a-a Manual