Aeromotive Wiring Harness Kit - Dual Fuel Pump - 16312 - AER16312

The Aeromotive Wiring Harness Kit for Dual Fuel Pumps (Part #16312) is a purpose-built electrical solution designed for high-performance vehicles running two fuel pumps simultaneously. Whether you're building a twin-pump in-tank setup, a staged fuel system for a boosted street car, or a dedicated race fuel system, this kit gives you a clean, safe, and properly rated wiring foundation right out of the box. Aeromotive is a well-regarded name in performance fuel delivery, and this harness is designed to integrate with their pump lineup as well as other dual-pump configurations.

Key Features & Benefits

• Dual 30 Amp Automotive Relays (x2): Each pump circuit gets its own dedicated 30-amp relay, isolating the load and protecting sensitive electronics from voltage spikes common in high-draw fuel pump applications.
• Dual 30 Amp Circuit Breakers (x2): Resettable circuit protection for both pump circuits means you're not hunting for a blown fuse during a build or at the track — a critical convenience for performance use.
• 20-Foot Overall Length: Sized specifically for full-size vehicles, giving you enough reach to route cleanly from the battery or fuse block all the way to in-tank or in-line pump locations without splicing or extending the harness.
• 6 to 10-Gauge Power Wiring: Heavy-gauge wire handles the current demands of dual high-flow fuel pumps without the voltage drop that undersized wiring can introduce — voltage drop is one of the leading causes of pump underperformance and premature failure.
• Complete, Ready-to-Install Kit: Everything needed to properly wire two fuel pumps is included in a single package, reducing trips to the parts store and ensuring the components are matched and rated to work together.
• Designed for High-Performance Fuel Systems: Purpose-matched for demanding applications like forced induction builds, E85 conversions, or any setup where a single pump can't meet fuel flow requirements.

Specifications

• Part Number: 16312
• Brand: Aeromotive
• Relay Rating: 2 x 30 Amp, 12 VDC Automotive Relay
• Circuit Breaker Rating: 2 x 30 Amp, 12 VDC
• Harness Length: 20 feet overall (sized for full-size vehicles)
• Wire Gauge: 6 to 10-gauge power and ground wiring
• UPC: 00684980014945

Fitment

The Aeromotive 16312 Dual Fuel Pump Wiring Harness Kit is a universal-fit electrical accessory — it is not vehicle-specific and does not require a particular year, make, or model. It is intended for any performance build that utilizes two fuel pumps, regardless of platform. The 20-foot harness length is noted by Aeromotive as being sized for full-size vehicles, so it is well suited to trucks, muscle cars, and full-frame platforms. Compact or subcompact vehicles will have more than enough length to work with. This harness is designed to pair with Aeromotive fuel pumps but is compatible with dual-pump configurations from other manufacturers as well, provided the electrical demands fall within the relay and circuit breaker ratings.

What's in the Box

• 2 x 30 Amp 12 VDC Automotive Relay
• 2 x 30 Amp 12 VDC Circuit Breaker
• Complete pre-terminated wiring harness (20-foot overall length)
• 6 to 10-gauge power wiring for both pump circuits

Why Buy from ThreePiece.us

ThreePiece.us offers free shipping on every order, so there are no surprise charges at checkout on the Aeromotive 16312 or any other performance part. Need to spread out the cost of your fuel system build? Financing is available through Affirm, letting you get the parts you need now and pay over time. Our team has over a decade of experience helping enthusiasts source the right components for their builds — if you have questions about whether this harness fits your specific application or how it works with your Aeromotive pump setup, reach out to our fitment specialists directly. We're here to help you get the right part the first time.

Frequently Asked Questions

Q: Does this wiring harness work with any brand of fuel pump, or only Aeromotive pumps?
A: The Aeromotive 16312 is a universal dual-pump wiring harness. While it's designed to integrate with Aeromotive's fuel pump lineup, the relay and circuit breaker ratings make it compatible with other dual-pump setups as long as your pumps fall within the electrical specifications of the kit (30 amps per circuit at 12 VDC).

Q: Is 20 feet of harness enough for my vehicle?
A: Aeromotive specifies the 20-foot overall length as being sized for full-size vehicles — trucks, full-frame muscle cars, and similar platforms. For smaller vehicles, you will have more than adequate length. For very long custom chassis or unusual routing requirements, measure your intended run before ordering.

Q: Does this kit include circuit protection, or do I need to source fuses separately?
A: Yes — the kit includes two 30-amp resettable circuit breakers (one per pump circuit), so dedicated circuit protection for both pumps is already part of the package. You do not need to source separate fuses for the pump circuits.

Q: What wire gauge does this harness use, and why does it matter?
A: The harness uses 6 to 10-gauge wiring for the power circuits. Heavier gauge wire is critical in high-current fuel pump applications because undersized wiring causes voltage drop, which reduces pump performance and can shorten pump life. Using properly rated wiring — as this kit provides — helps ensure your pumps receive the full voltage they need to flow fuel at their rated capacity.