SKU: CW87693
MPN: 45513040
The Mastervolt Alpha Pro III with Extended 13' Harness is purpose-built for serious automotive electrical work, particularly in custom vehicle builds, off-road modifications, and professional shop environments. As a mechanic working with modern engine management systems and auxiliary power draws, you'll recognize this as a critical component for vehicles requiring reliable battery monitoring, voltage regulation, or integrated charging system diagnostics. The extended harness design eliminates the common installation constraint of remote mounting, allowing you to position the unit away from engine heat and vibration while maintaining clean cable runs through the firewall or underbody.
The Alpha Pro III integrates advanced monitoring circuitry with a robust 13-foot harness rated for the electrical demands of dual-battery setups, auxiliary lighting circuits, or winch-equipped vehicles. At 4.2 lbs with compact dimensions (7 x 3 x 10 inches), the unit delivers professional-grade sensing and switching capability without the bulk that hampers engine bay real estate. The extended harness construction—a significant upgrade over standard configurations—uses quality copper conductors sized to handle sustained loads without voltage drop, critical when you're managing high-amperage circuits or remote battery disconnect functionality. Mastervolt's design prioritizes thermal stability, allowing the Alpha Pro III to operate reliably in the extreme temperature swings typical of lifted trucks or engine bay-mounted auxiliary systems.
Installers will appreciate the 13-foot harness as a game-changer for hidden battery box configurations, custom fabrication projects, or vehicles where the battery has been relocated for weight distribution or underbody clearance. This unit fits seamlessly into modern truck builds, expedition vehicles, and race car electrical systems where discrete integration matters as much as performance. Compatibility spans most 12-volt and 24-volt automotive platforms, making the Mastervolt Alpha Pro III a versatile choice whether you're upgrading a factory truck, engineering an overlanding rig, or building a high-output electrical architecture from the ground up.
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