Holley EFI Pro Dash Input/Output Harness 558-456
Type: Harness
This wiring kit is intended to fully populate all of the inputs and outputs for part numbers 553-111 and 553-112 Pro Dashes. These can easily be inserted into the existing 34 pin dash connector. It contains loose wires and 2 and 3 conductor cable (jacketed but not shielded). There are TE superseal pins crimped on every wire and cable. There are also extra pins that can be used (likely needed when using the jacketed cable for more than one sensor).
Features:
- 2 conductor cable (Black/Blue); 20 ft.
- 3 conductor cable (Orange/Green/Black); 40 ft.
- 17 loose wires with crimped Tyco pins in various colors; 10 ft. each
- 20 superseal pins
- 20 superseal plugs
- 20 gauge TXL wire
Specs:
- Brand: Holley EFI
- Category: Air and Fuel Delivery
- Emission Code: 3
- End 1 Terminal Type: Pin
- End 2 Terminal Type: Pin
- Grade Type: Performance
- Part Type: Electronic Throttle Harness
- Product Type: Harness
- Sub Category: Body Wiring Harness and Components
- Wire Color: Various
- Wire Gauge Measurement: 20
Tech Resources:
The installer can choose to match the color and functions given in the instructions for consistent installations.
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Important Notices
- Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
