30AMP Wiring kit for 12V fuel pumps, universal

30A Fuel Pump Relay & Wiring Upgrade Kit – Universal

High-quality 30 amp relay and wiring kit designed to ensure safe and reliable power delivery for upgraded fuel pumps. Many factory fuel pump circuits use wiring that is undersized for higher-current aftermarket pumps, which can lead to voltage drop, pump underperformance or, in the worst case, overheated wiring and electrical failure.

This kit adds a dedicated, fused power supply via a relay, allowing the fuel pump to receive stable voltage directly from the battery while keeping the original control signal intact. It is a highly recommended upgrade whenever installing a higher-flow in-tank or external fuel pump.

Important note: This kit is designed primarily for traditional 12V on/off fuel pumps. If your vehicle uses a PWM-controlled (pulse-width modulated) fuel pump, do not bypass the factory control with constant 12V unless you fully understand the system and its requirements. Incorrect installation on PWM systems may cause fault codes, pump damage or drivability issues.

Kit Contents

• 30A 5-pin switching relay
• 30A fuse with waterproof fuse holder
• 8 × red positive cables (6 mm²)
• 1 × black ground cable (6 mm²)
• 3 × butt connectors (6 mm²)
• 5 × rubber grommets
• 6 × ring terminals
• 6 × flat connectors
• 2 × pole protection caps (red and black)
• 6 × cable ties

A universal, well-specced wiring solution for fuel pump upgrades in street and performance vehicles.