A-Premium Turn Signal & Multi-Function Switch for Volvo VNL/VN 2005–2012, 14‑Pin Direct Replacement

A-Premium's multi-function turn signal switch combines turn signals, headlight beam change, PTO speed adjust, cruise control, and hazard operation in one direct-replacement unit for Volvo VNL/VN trucks (2005–2012).

This heavy-duty switch is designed to fit under the left side of the steering wheel on Volvo VNL and VN trucks equipped with D11, D12, D13, D16 or ISX15.0 engines from model years 2005 through 2012. It replaces factory part numbers 978-5501, 20399170, 20479584, 20701049, 20797838 and 3944025 and uses a 14-pin male connector for a direct, plug-and-play replacement. Built for professional truck use, the unit groups several controls into a single ergonomic stalk to reduce dash clutter and restore original functionality when your factory switch has worn out or failed.

What functions does this A-Premium switch control?

The switch integrates primary road-lighting and safety controls with auxiliary vehicle functions. You get standard left/right turn signaling plus both momentary and latching high-beam control, headlight beam changes, and hazard activation. It also supports PTO speed adjustment and cruise control inputs used on compatible Volvo systems.

• Turn signals: left and right signaling with return-to-center action
• High beams: momentary flasher and latching high-beam operation
• Headlight beam change for low/high selection
• PTO speed adjustment and cruise control inputs

How do I confirm fitment for my Volvo truck?

Verify fitment by model year, engine family, and connector type. This A-Premium assembly is made for Volvo VNL/VN trucks built from 2005 to 2012 with D11/D12/D13/D16 or ISX15.0 engines and uses a 14-pin male plug. Cross-reference the part with the listed reference numbers to ensure compatibility before ordering.

• Compatible vehicles: Volvo VNL/VN 2005–2012
• Engine compatibility: D11, D12, D13, D16, ISX15.0
• Connector: 14-pin male terminal; direct replacement fitment
• Reference numbers: 978-5501, 20399170, 20479584, 20701049, 20797838, 3944025

What are the electrical and installation specifics?

The switch uses a 14-pin male connector and white indicator markings for clear visibility. It mounts under the left side of the steering wheel as a direct replacement, so installation typically requires unplugging the factory connector and seating the new unit in the original bracket. No special programming is required for physical replacement on compatible vehicles, though system checks after installation are recommended.

• Connector type: 14-pin male
• Terminal style: male terminals for plug-in installation
• Indicator markings: white for easy reading in daylight
• Placement: under left side of steering wheel; direct-replacement mounting

What warranty and support does A-Premium provide?

A-Premium backs this part with a one-year unlimited-mileage guarantee, covering manufacturing defects under normal use. Their return and support procedures are aimed at truck operators and shops, offering peace of mind when replacing a worn or non-functioning control stalk.

• Warranty: one-year unlimited-mileage guarantee
• Support: product support for installation and fit questions
• Quality: built as a direct replacement to restore OEM functions

Who is this for: This multi-function switch is intended for fleet operators, owner-operators, and diesel technicians who need a robust, direct-replacement control stalk for Volvo VNL/VN trucks (2005–2012). It suits anyone restoring original electrical control functions after wear, damage, or failure, and for shops seeking a reliable, warrantied part for on-the-road repairs.