This wiring kit fully populates the inputs and outputs on Holley Pro Dash part numbers 553-111 and 553-112, feeding into the existing 34-pin dash connector. It's supplied with loose wires and jacketed 2- and 3-conductor cable, all pre-crimped with TE superseal pins, plus extra pins for adding sensors.
Specifications:
- Fits: Pro Dash 553-111 and 553-112 (34-pin connector)
- Wire Gauge: 20-gauge TXL
- Cable: 2-conductor black/blue, 20 ft.; 3-conductor orange/green/black, 40 ft.
- Loose Wires: 17, crimped Tyco pins, various colors, 10 ft. each
- Pins/Plugs: 20 superseal pins, 20 superseal plugs
- Termination: Unterminated, installer-configurable
- Part Number: 558-456
The installer can match wire color and function to the instructions for a consistent installation.
FAQ
What Pro Dash models does this harness fit?
Part numbers 553-111 and 553-112, connecting through the existing 34-pin dash connector.
Is the harness pre-terminated?
No, it's unterminated — loose wires and cable with crimped TE superseal pins already installed, letting the installer route and match wire colors to functions per the instructions.
What gauge wire is used?
20-gauge TXL wire throughout.
What's included in the kit?
2-conductor and 3-conductor jacketed cable, 17 loose pre-pinned wires, plus extra superseal pins and plugs.
