This GM Gen V LTx drive-by-wire (DBW) harness connects an LTx throttle body to a Holley Terminator X or Terminator X Max ECU, compatible with GM part numbers 12617792 (L83) and 12678223 (L86, LT1, LT4).
Specifications:
- Engine platform: GM Gen V LTx (L83, L86, LT1, LT4)
- Throttle control: DBW (drive-by-wire) — this is a throttle body harness, not a mechanical/DBC harness
- Compatible GM part numbers: 12617792 (L83), 12678223 (L86, LT1, LT4)
- ECU compatibility: Terminator X and Terminator X Max
- Harness type: Throttle body wiring harness only
- Crank/cam wheel type: Not specified in available Holley data — this harness is throttle-body-specific and does not carry crank/cam sensor wiring
- Injector connector type: Not specified in available Holley data — not applicable to this throttle body harness
- Transmission control: Not applicable — this is a throttle body harness only, no trans control wiring
- Part Number: 558-468
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 throttle bodies does this harness work with?
GM Gen V LTx throttle bodies, GM part numbers 12617792 (L83) and 12678223 (L86, LT1, LT4).
What ECUs is this harness designed for?
Holley Terminator X and Terminator X Max ECUs.
Is this a drive-by-wire or drive-by-cable harness?
Drive-by-wire (DBW) — it's built for GM's electronic LTx throttle bodies.
Does this harness include crank/cam sensor or injector wiring?
No — this is a dedicated throttle body harness only; crank/cam and injector wiring come from the separate engine main harness.
