Ignitions and Electrical› Wiring Harnesses
Holley
SERVICE HARNESS, STANDALONE PRO DASH
SKU: H00E 558-457
Moderate — 2–4 hours
Description
Fitment
Fitment Guaranteed
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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 558-457 |
Videos
Holley Pro Dash install and wiring. The secret pin!!!
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How to add turn signal indicators to your Holley Dash
BUDGET HOLLEY EFI DIGITAL DASH! CHEAP AND EASY TO INSTALL! E36 Turbo LS Swap Ep: 38
Holley Digital Dash Tech Series Episode 1
Installing a Holley Prodash 6.86 On Our Foxbody Mustang Using factory Wiring
Installing Holley Digital Pro Dash / Custom Dash surround - HX One Tonner Build
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.
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