-10% Main Harness, Unterminated Universal

If you are looking at this harness then you are obviously forced down a difficult road! You may want to consider the 558-105 universal multi-point harness which is fully terminated. However, some applications are so specialized that only this build-from-scratch harness will do. Have fun and contact us if things get too tough!

Do The Job Right--Add A Connector Kit!

Just because you're installing an unterminated harness doesn't mean you have to go it alone when it comes to connectors. If you have one of these popular engines you can get the exact sensor connectors you need to finish the job professionally!

  • GM LS and Truck Engines
  • Ford Coyote Engines
  • Ford 2V and 4V Mod Engines
  • Gen III Hemi Engines
  • GM TPI Engines and Engines using Holley sensors

Not Sure? Review this product documentation before you buy!

 
Wiring Diagrams for
Holley ECU's and Harnesses

Harnesses
Harness TypeMain
TerminatedNo
General
Also IncludedIntegrated 40Amp Relay (Order 534-26 if replacement ever required)
ApplicationUniversal application
LengthMost main harnesses allow a maximum of 5 feet between the back of the cylinder head and the ECU mounting location (as the wire travels.) This is only a rough estimate and nothing should be installed before you have the harness in hand.
Unit of SaleEach

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Main Harness, Unterminated Universal

  • Views: 10053
  • Brand: Holley
  • Product Code: 558-105
  • Availability: In Stock
  • $472.00
  • $423.95

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