Main Relay Conversion – Plug & Play | Mil-Spec 40A Sealed Relay

A modern solution for your aging main relay.

This plug-and-play conversion harness features:

• ⚡ RaceSpec 40A sealed relay
• 🔌 OEM-style Honda 4-pin connector
• 🧵 6” mil-spec 14AWG Tefzel leads
• 🔒 Raychem ATUM sealed ends
• 🧵 Clean braided loom for professional routing

Upgrade reliability and power delivery for any OBD1/OBD2 Civic, Integra, or Honda swap. No splicing or guesswork, just pure reliability—built in-house for enthusiasts.

Perfect For:

• Fixing fuel delivery or ECU power issues
• Boosted & standalone ECU builds
• Replacing aging or unreliable OEM relays
• Clean, professional wiring for swap projects

Fitment:

• 1992–2000 Honda Civic
• 1994–2001 Acura Integra
• Most OBD1/OBD2 Honda chassis
• Compatible with swap harnesses using standard main relay location
• 🇺🇸 Built by VTEC Innovations