The Gen III HEMI's drive-by-wire pedal connector changed in 2008 on cars and 2007 on trucks. This harness is built for the earlier, larger TYCO/AMP pedal connector, letting a Dominator ECU control fuel and spark on a Gen III HEMI swap or power upgrade.
Specifications:
- Application: Gen III HEMI, early TYCO/AMP connector
- Vehicle Coverage: 2003-2007 cars, 2003-2006 trucks
- Compatible ECU: Dominator only
- Approved Throttle Body: Only the factory 0459 1847 drive-by-wire throttle body has been pre-calibrated and approved for use with this harness
- Variable Valve Timing: Not supported; VVT-equipped engines will run with cam timing reverted to mechanical default
- Multi-Displacement System (MDS): No connection required
- Wiring: TXL-grade copper, high-temp sleeve, small diameter
- Part Number: 558-417
Compliance: This part is legal for sale and use on Racing Use Only Vehicles — competition vehicles that are not registered and never operated on the street. It is against the law to install this part on an Emissions Controlled Vehicle (1966-and-newer California-certified or 1968-and-newer federally certified vehicles).
FAQ
What vehicles is the 558-417 harness built for?
It's built for Gen III HEMI-equipped cars from 2003-2007 and trucks from 2003-2006 that use the earlier, larger TYCO/AMP pedal connector.
Which ECU works with this harness?
This harness is for use with the Dominator ECU only.
Does this harness support Variable Valve Timing?
No, VVT is not currently supported; the cam timing will revert to its mechanical default.
Is this harness legal for street use?
No, it's legal for Racing Use Only vehicles and cannot be installed on an emissions-controlled street vehicle.

