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Holley EFI Expands Wiring Shop Selection!

By: Skylar Drake11/19/2019 < Back to Blog Home
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Whether you're building a harness from scratch, replacing an old connector or installing a new sensor Holley's wiring shop has the tools and equipment you need! Featuring items from multiple Holley brands, the wiring shop is your one-stop place for everything needed to work on your aftermarket fuel injection or high-performance ignition system. Read on to learn more!


Cable Scissor Cutter Pliers


Using the right tool makes the difference between a good job and a great job; MSD offers their cable scissor cutters to ensure precise cuts making your next wiring job a breeze!
  • Thermal plastic handles.
  • Cuts up to 1.5 inch cable.
  • Precision ground, hardened blades suitable for cutting copper and aluminum on single and multiple strand cables.
  • Adjustable screw joint and safety lock.
  • Clean and smooth cut without crushing or deformation.

  • Unterminated Flying Lead Harness


    Wanting to go full-custom on your next fuel injection conversion? Holley EFI now offers a "flying lead" harness featuring pre-terminated J1A and J1B connectors. With 15 feet of wire, you can place sensors, connectors and more wherever you need!
  • 15’ long flying lead harness, allows you to completely customize your main harness installation.
  • 60 Holley Crimped Wires (57x 20 ga, 3x 18 ga).
  • 30 optional plug seals.

  • Weathertight Connector Kit


    MSD now offers various electrical connectors and heat shrink kits for all your wiring needs including Weathertight, Superseal, Heat Shrink kits and more! Proper electrical connections ensure safety, reliability and maximum current flow to all your cars electronics, rely on MSD for all of your connector needs.
  • Weathertight housings made of Nylon plastic and impact resistance.
  • Positive snap lock action with secondary locking for terminal retention.
  • Temperature rated at -40° C – 120° C (-40° – 248° F).
  • Wire sizes from 14-20 AWG.
  • 138 piece kit.

  • Weatherpack Tool Kits


    These pin extraction tools work on Weatherpack, weather-tite, and many OEM (GM, Ford & Chrysler) connectors. Designed to release and extract the terminals from the connector housing when wiring or repairing your vehicle. 3-piece set with a narrow pick, wide pick, and tubular shaped extraction tool.
  • Ideal for assembly & removal of weatherpack & OE-style electrical connectors.
  • Plastic handles w/ metal pin extraction tip & picks.
  • Includes (2) picks (.050” & .090” wide) & (1) pin extraction tool.

  • J1-J4 Connector Kits for Holley EFI


    It has never been easier to build your own harness for Holley EFI and with the new J1-J4 connector kits you can customize your ECU connections and not worry about splicing individual wires. Pins are included and make hooking up that new sensor or adding eight extra injectors a breeze!
  • Available in complete connector kits or individually.
  • OEM quality connectors and pins.
  • Perfect for DIY or wiring specialists that want to build custom wiring harnesses for any application.

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