Skip to content
Holley EFI Unterminated 15' Flying Lead Main Harness - Billet Pro Shop

Holley EFI Unterminated 15' Flying Lead Main Harness

by Holley
SKU 558-126
$0
$558.00 - $558.00
$558.00
$558.00 - $558.00
$558.00
 More payment options

Pickup available at Billet Pro Shop

Usually ready in 24 hours

Racing Use Only, Not Legal for Road Use

The unterminated main harness comes with both J1A and J1B connectors full terminated with 15' of flying lead wiring.

Features:

  • 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

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

You may also like

Holley EFI Main Power Harness - Billet Pro Shop

Holley EFI Main Power Harness

Holley
$130.00 - $130.00
$130.00
$130.00 - $130.00
$130.00

This Harness is required with HP or Dominator ECUs. Includes, 13' long, 10 AWG main power harness, Qty. (2) 3/8" ring terminals and shrink tube (no...

View full details
$130.00 - $130.00
$130.00
$130.00 - $130.00
$130.00
Coyote Main Harness Connector Kit - Billet Pro Shop

Coyote Main Harness Connector Kit

Holley
$192.00 - $192.00
$192.00
$192.00 - $192.00
$192.00

Introducing EFI Engine Connector Kits – From Holley EFI. With the latest addition to our ever-expanding Wiring Shop, our goal was to provide you wi...

View full details
$192.00 - $192.00
$192.00
$192.00 - $192.00
$192.00
Jolt 2020+ Ford 7.3 Godzilla Engine Wiring Harness - Dominator EFI No VCT and Smart Coils - Billet Pro Shop

Jolt 2020+ Ford 7.3 Godzilla Engine Wiring Harness - Dominator EFI No VCT and Smart Coils

Jolt Systems
$1,627.00 - $1,869.00
$1,627.00 - $1,869.00
$1,627.00 - $1,869.00
$1,627.00

Introducing the first plug and play Godzilla Main Engine Harness from Jolt Systems.  For use with following configuration: Dominator ECU NO VCT Co...

View full details
$1,627.00 - $1,869.00
$1,627.00 - $1,869.00
$1,627.00 - $1,869.00
$1,627.00
Big Wire Coil-Near-Plug Smart Coil Kit - Billet Pro Shop

Big Wire Coil-Near-Plug Smart Coil Kit

Holley
$999.00 - $999.00
$999.00
$999.00 - $999.00
$999.00

Do you need precision control over your ignition system? Would your combination benefit from Individual Cylinder Timing Control? Are you experienci...

View full details
$999.00 - $999.00
$999.00
$999.00 - $999.00
$999.00
Holley EFI Can Adapter/Power Harness - Billet Pro Shop

Holley EFI Can Adapter/Power Harness

Holley
$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00

The Holley EFI Can Adapter/Power Harness adapts two pin Holley main harness CAN connectors to new style 4 pin CAN devices.

$55.00 - $55.00
$55.00
$55.00 - $55.00
$55.00

Compare products

0 of 3 items selected

Select first item to compare

Select second item to compare

Select third item to compare

Compare