SMG Universal Aux Fuel System Power Harness (Hobbs Triggered)
SMG Universal Fuel Pump Wiring Harness
SMG’s Universal Harnesses are the proven, high-quality solution for powering your custom fuel supply system. Whether you’re running a single pump, twin pumps, or a full-race fuel setup, these harnesses deliver the durability, safety, and reliability your build demands.
Configurable to Your Needs
Select from multiple Proven and Reliable Hobbs switch options – No Hobbs, 2 psi, 4 psi, 7 psi, or 10 psi – to match your exact fuel system requirements. (No Hobbs verision will allow for negative trigger from your choice of activation source)
Built for High Current & Harsh Environments
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Constructed from 14-gauge automotive-grade copper wire for maximum conductivity and minimal voltage drop.
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Fully protected with abrasion-resistant braided sleeving to withstand heat, vibration, and engine bay abuse.
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Features a weather-sealed 40-amp relay for dependable switching under load.
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Includes the Hobbs switch of your choice for pressure-activated control.
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Dual fused for safety – protecting both the pump and the activation circuit.
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All terminations are professionally crimped and sealed to prevent corrosion and ensure long service life.
Plug-and-Play Installation
Each harness is pre-terminated, labeled, and ready to integrate into your existing wiring with minimal effort. The universal design works with most electric fuel pumps, making it ideal for custom builds, retrofits, or race applications.
Why Choose SMG?
We design our harnesses from real-world experience in high-performance automotive applications. Every component is chosen for strength, reliability, and performance — because in racing and high-HP street builds, wiring failures aren’t an option.
**All SMG Products are designed with the DIY installer in mind, however due to great variance in DIY installer skill and experience, The SMG Lifetime Warranty will only apply to installations performed by verifiable commercial installers. If you attempt to DIY install, please note, all systems are assembled and tested before they leave our facility, and no technical or installation support will be provided. Damage to components due to misuse, improper installation, or outside causes will be NOT considered for any sort of Warranty Coverage, keep in mind systems are tested and verified prior to leaving our facilities. **
Liability – This is a High-Performance Aftermarket Fuel system. You will make modifications to both your fuel, and electrical systems. You the installer, the consumer, and user acknowledge the inherent risks and assume all liability, laws and any applicable dangers associated.