FUSCH HVAC Blower Motor Control Switch for Peterbilt 379 (2006-2007) & 384 (2008-2015) — 8-Terminal, Plug-and-Play Replacement

FUSCH HVAC blower motor control switch is a direct-fit replacement switch for Peterbilt 379 (2006–2007) and 384 (2008–2015) that restores HVAC fan speed control with a simple plug-and-play swap.

This replacement switch is built to the same dimensional and electrical standards as the original, using durable materials and silver-plated brass contacts to maintain reliable conductivity and resist corrosion. It’s designed to re-establish blower motor operation without the expense of replacing an entire control module — a practical repair option for fleets and owner-operators who need fast, cost-effective HVAC fixes.

How does this switch restore HVAC blower control?

The FUSCH blower motor control switch directly replaces the failed switch in the HVAC control assembly, enabling manual selection of fan speeds via its twist action. Its eight terminals and compatible connector layout match the factory wiring for straightforward electrical integration.

• Connector gender: female for correct mating to vehicle harness
• Terminal quantity: 8 to match OEM wiring
• Switch type: twist action for tactile speed selection
• Terminal gender: male terminals for secure electrical contact

What materials and design features make it durable?

The switch uses ABS plastic housing for impact resistance and long service life, while internal stainless steel springs add fatigue resistance to repeated use. Silver-plated brass contacts deliver strong conductivity and reduce oxidation, which helps maintain responsiveness over time.

• ABS plastic housing resists cracking and heat exposure
• Stainless steel springs maintain consistent tension and feel
• Silver-plated brass contacts minimize corrosion and voltage drop
• Precision-molded terminals ensure reliable electrical connection

Is installation difficult or time-consuming?

Installation is intended to be quick: the FUSCH switch is a plug-and-play replacement that fits the OEM connector and mounting points. No special calibration or programming is required, which reduces downtime and labor costs for technicians and DIYers alike.

• Direct-fit replacement for easy removal and installation
• No module replacement or reprogramming needed
• Standard tools suffice for typical dashboard or control panel access
• Comes with OEM-equivalent terminal layout to simplify wiring

Who is this for: This FUSCH blower motor control switch is aimed at Peterbilt owners, truck maintenance shops, and fleet managers looking for an affordable, OEM-compatible repair part. If you operate a Peterbilt 379 (2006–2007) or 384 (2008–2015) and the HVAC fan speeds are intermittent, stuck, or nonfunctional, this component provides a practical replacement to restore reliable blower control without replacing larger, costlier assemblies.