A: No. Kenwood uses a different keying mechanism. You need a Clarion 16-pin universal harness , widely available on Amazon or eBay for under $10.
The Clarion is an OEM (Original Equipment Manufacturer) car stereo unit, commonly found in vehicle models from brands like Nissan and Suzuki . Because it is a factory-installed unit, a standalone "PX-3994A-A" manual is rarely published separately by Clarion; instead, its operating instructions are usually integrated into the vehicle's primary Owner’s Manual . How to Find the Manual Clarion Px-3994a-a Manual
Long press to automatically find and save the six strongest stations to the current band's presets. Sound/Menu: Accesses Bass, Treble, Balance, and Fader settings. www.clarion.com 2. Audio Source Operations Radio Tuning: If "MANU" is not displayed, press and hold the The Clarion is an OEM (Original Equipment Manufacturer)
If you are looking for basic functionality, most Clarion head units from that era follow these standard procedures: Sound/Menu: Accesses Bass