How do you get to the diagnostic connector on a c4?

To access the diagnostic connector on a C4, typically located beneath the dashboard on the driver's side, you'll need to remove any covering panels that may obstruct it. Look for a rectangular or oval-shaped connector, often situated near the steering column or behind a removable panel. Once located, you can plug in your diagnostic tool to read any trouble codes or perform diagnostics. Be sure to disconnect the battery if you're working on the vehicle's electrical system for safety.