The Holley wiring manual provides diagrams and instructions for wiring HP and Dominator EFI systems, covering sensors, connectors, and outputs.
This wiring manual gives detailed information and diagrams for installing and wiring Holley HP and Dominator EFI systems. It covers proper grounding, sensor wiring, connector pinouts, and power distribution for a clean and reliable electrical system.
Key sections include ECU installation and pinouts, main harness layout, primary sensor connections (TPS, MAP, CTS, etc.), primary outputs such as IAC and injectors, ignition system wiring, programmable I/O, and specialized systems like nitrous, water/methanol injection, and electronic transmission wiring.
| J1A connector pin count | 34 pin |
|---|---|
| J1B connector pin count | 26 pin |
| USB connector type | mini USB |
| Wideband O2 sensor options | Bosch PN 554-101 or NTK PN 554-100 |
| Standard fuel pressure transducer | Holley 100 PSI PN 554-102 |
Both ECUs use a common mini USB connector.
The J1B connector provides eight injector outputs.
Install the main power and ground directly to the battery.
A Holley 100 PSI pressure transducer, part number 554‑102, is standard.