Worry About Winning... Not Wiring!
Worry About Winning... Not Wiring!
Cart 0
MR Builder Series Holley EFI Unterminated 15' Main Harness
MR Builder Series Holley EFI Unterminated 15' Main Harness

MR Builder Series Holley EFI Unterminated 15' Main Harness

Regular price $599.99 $0.00 Unit price per

 Modern Racing Wiring Solutions is proud to offer a premium replacement for the bulky factory ECU main harness. Built with Mil-spec Tefzel wire this harness is assembled stronger and more durable than standard harnesses, offering greater heat and abrasion resistance. Designed to work with Holley HP, Dominator, and Terminator X systems this unit is a must have for customers who are looking for a clean and easy install. Modern Racing has even taken it a step further, by adding in pre-assembled splices to help take away the frustrating labor and headaches normally associated with wiring. Add in the fact that our harness is over 25% lighter than the factory unit and you'll find upgrading to our Mil-spec harness is a no brainer.

 

SPECS AND FITMENT:

-Body Style: Universal unterminated

-Connectors: J1A, J1B Pre-terminated

-ECU: Holley (HP, Dominator, Terminator X)

-Designed to replace Holley part #558-126

 

HIGHLIGHTS:

-25%+ lighter than factory harness

-Built-in sensor ground splice (pre-spliced for 14 sensors)

-Built-in sensor power splice (pre-spliced for 8 sensors)

-Built-in coil EST output (pre-spliced for 8 coils)

 

PACKAGE CONTENTS:

-(1x) J1A and J1B complete unterminated harness