Exterior Components› Body Panels and Components
Holley
PROJECTION 2D CLOSED LOOP HARN
SKU: H00E 534-56
Moderate — 2–4 hours
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Holley |
| Part Number | H00E 534-56 |
| Weight | 0.2 lb |
Videos
Holley - EFI Tech: Main Harness Overview
Holley EFI ECU Mounting & Wiring
Holley EFI - Throttle Position Sensor Auto Set
LS Swap S-10 Burnout Truck Burnie gets Holley Terminator X and 4150 Throttle Body! EFI Wiring Part 1
Holley Sniper 2 EFI: Your Complete Installation Guide To Sniper 2
Give Your LS Swap a Classic Look with the Holley RetroFilter
How to use a Holley EFI 58x Harness on 24x Engines
How to wire Dual Throttle bodies on my TBSS - Holley Sniper EFI 4K
Holley EFI Throttle Body Intake Elbow
Chevy 454ss Holley Sniper EFI Install - OBS Chevy Big Block Shop Truck Ep. 3
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy