WIRING MANUAL & DIAGRAMS 199R10555 HP EFI and Dominator EFI Systems 1
Contents 1.0 Manual Overview ................................................................................................................................................................... 3 1.1 Important Wiring “Do’s and Don’ts” .................................................................................................................................... 3 2.0 ECU Installation, Connectors, and Pinout ..................................................................................................
1.0 Manual Overview This manual contains information and diagrams related to wiring most Holley EFI products including ECU’s, ignition systems, nitrous systems, water/methanol injection systems, sensors, and more. 1.1 Important Wiring “Do’s and Don’ts” An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side.
Figure 1 Dominator ECU – The Dominator ECU contains the same two main connectors that the HP ECU has - P1A and P1B. The main wiring harnesses are identical between the two, meaning a Dominator ECU can be installed in place of an HP ECU. The Dominator ECU has four additional connectors that the HP does not. They are as follows and are seen on Figure 2. 1. P2A – The P2A connector is an “Input” connector for the following purposes: #2 wide band oxygen sensor input A variety of user programmable inputs.
58-404 – P4 Auxiliary Harness - Contains connector and loose wires with crimped pins. 558-405 – GM 4L60/80E Transmission Harness – Complete terminated harness with P4 connector to operate GM electronic transmissions. 558-406 – GM Drive By Wire Harness – Complete terminated harness with P3 connector to operate late GM drive by wire systems. 558-408 – P2A, P2B, P3, P4 Connector and Pin Kit – Contains connectors and pins, but no wiring.
P2A Pin A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A30 A31 A32 A33 A34 Function Input #6 (52THG) Input #10 (52THG) Input #14 (5G) Input #18 (FS) Input #21 (5HG) Input #25 (5HG) WB2 COMPR2 WB2 Shield WB2 HTR Input #5 (52THG) Input #9 (52HG) Input #13 (5G) Input #17 (FS) Input #20 (5HG) Input #24 (5HG) WB2 COMPR1 WB2 VS-/IP+ Sensor Ground Input #8 (52THG) Input #12 (5G) Input #16 (FS) Speed Inputs Ground Input #23 (5HG) Input #27 (5HG) WB2 VS+ S
P3 Pin B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 B22 B23 B24 B25 B26 Function Sensor Ground Input #31 (5) Input #32 (5) DBW #2 A Out DBW #2 B Out DBW #1 A Output DBW #1 B Output Sensor +5v Input #30 (5) Output #24 (H P+) Output #23 (H P+) Output #22 (G P-) Output #21 (G P-) CAN2 Lo Input #29 (5) Sensor Ground Global Folder Config Select Switch Input #36 (52THG) Output #25 (H P+) CAN2 Hi Input #28 (5) Sensor +5v Input #33 (5) Input #35 (52THG) Input #34 (5) Output #26 (H P+)
4.2 Manifold Air Pressure Sensor (MAP) Holley EFI systems work with 1, 2, 3, 4, or 5 Bar MAP sensors. Make sure to select the proper sensor used in the software. A18 – Sensor Ground A23 – MAP Sensor Signal A26 – Sensor +5v Reference Out 4.3 Coolant Temperature Sensor (CTS) Holley EFI systems work with any 2 wire thermistor style coolant temperature sensors. Make sure to select the proper sensor in the software. A18 – Sensor Ground A19 – Coolant Temp In 4.
4.8 Oil Pressure (Oil) An oil pressure input is a standard feature on Holley EFI. A connector is installed that is plug-and-play with Holley 100 PSI pressure transducer PN 554-102. A different 0-5V transducer can be used, but the calibration must be set up as a custom sensor in the software. If these are not connected to a pressure transducer, the Fuel and Oil Pressure will read “LOW Err” in the data monitor. This will not cause any issues.
5.3 Ignition Adapter (Ignition) The Ignition Adapter connector contains all the wires needed to connect to adapter harnesses offered by Holley for various ignition systems and crank and cam sensor. The only ignition related wiring that is NOT contained on this connector is individual coil driver outputs for DIS applications.
7.0 Main Power 7.1 Overview Holley HP and Dominator ECU’s use the same main power cable. These wires should be run directly to the battery. 10 gauge wire is used. The harness comes with a 40 Amp fuse pre-installed. Do not substitute smaller gauge wires. 8.0 Ignition System Wiring Both the HP and Dominator Systems support a wide variety of ignition systems. The following schematics show how to wire the most typical systems 8.
8.3 Small Cap Computer Controlled GM HEI To connect to a small cap computer controlled GM HEI, ignition adapter harness PN 558-304 is required. The following diagrams overview how to wire with and without a CD ignition box.
8.4 Ford TFI To connect to a Ford TFI ignition module, ignition adapter harness PN 558-305 is required. Note that the system is designed only for distributors used for sequentially injected Ford engines such as 5.0L Mustangs. A very small amount of TFI style distributors around 1985 did not have a cam sync ident in the pickup. The following diagrams overviews how to wire a TFI distributor with and without a CD ignition box.
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8.5 NON- ECU Controlled Timing Applications (ex. GM Non-ECU Controlled Large Cap HEI) To connect to a distributor that has mechanical advance and is not controlled by the ECU (ex. GM large cap HEI non-computer controlled distributor), refer to the following diagrams. If NOT using a CD ignition box, connect the loose YELLOW (NOT yellow/black wire) in the harness to the negative side of the ignition coil.
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8.6 Magnetic Crank Pickup The follow diagrams are for running a magnetic pickup, either a crank trigger or a distributor. To run just a magnetic pickup crank input and no camshaft input, PN 558-303 should be purchased. If a cam sync input will be used as well, it is recommended to use PN 558306 which will contain wiring for both the crank and cam sensor inputs.
8.7 Magnetic Cam Pickup The following diagram is to wire a magnetic cam sync signal. It utilizes the shielded/grounded cabling found in PN 558-306. It is critical that properly installed shielded and grounded cable is used when using a magnetic pickup, or it is likely that EMI will disturb the camshaft signal.
8.8 Hall Effect Crank Pickup The follow diagrams are for running a hall effect pickup, either a crank trigger or a distributor. It is recommended to use PN 558-306 which will contain wiring for both the crank and cam sensor inputs. It is important that properly installed shielded and grounded cable is used when using a hall effect input. PN 558-306 comes with the proper cabling. It must be installed properly as well.
8.9 Hall Effect Cam Pickup The following diagram is to wire a hall effect cam sync signal. It utilizes the shielded/grounded cabling found in PN 558-306. It is desirable to use a properly installed shielded and grounded cable so that EMI will not disturb the camshaft signal. Figure 12 8.10 Holley Distributorless Ignition System (DIS) Holley DIS can be retrofitted onto any engine. It is a waste-spark type system which means that one twin-tower coil feeds two cylinders that fire 360 degrees apart.
NOTE: Keep this wiring separated from the spark plug ignition wires. Do not run these wires through or in parallel with the spark plug wires. Coil and Plug Wiring It is imperative that the wiring of the coils and spark plug wiring is done correctly.
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9.0 Programmable Inputs and Outputs Programmable input and outputs are intended to be any input or output that is created by the user when a Global Folder is configured. Once configured, they must be assigned a to a specific pin location on the Pin Map, and then physically wired per the assigned location. NOTE 1: As a standard wiring practice, DO NOT wire any input or output to a source that draws more than 2 amps.
Signal – Run the sensor signal wire into the Pin Mapped channel Power – Either supply with clean switched power, or if it is not used for another purpose, you can power from Pin P1B-B20 which is a clean 12v power source. If the sensor requires 5 volts, use a +5v reference line. Ground – It is best to connect to an IPU (Inductive/Magnetic Pickup) or Sensor Ground.
and Engine Speed activation settings. These three inputs are optional. An example would be to enable one off the trans-brake such that nitrous is NOT activated when the trans-brake is applied. They can be configured as a ground or +12v input in the software. Non-Progressive Wiring – Any non-progressive stage of nitrous can be wired with a conventional switching relay. The ECU will trigger the relay to activate the stage.
The wiring harness included has a red wire going to pin A on the solenoid connector. This wire should go to the injector output on the ECU. It has an ECU pin already attached. An extra ECU pin is included if this wire needed to be shortened and re-terminated. The blue wire in the harness needs to be connected to a +12v switched power source capable of handling 2A. Water/Meth Pump Activation – An output is created that is used to trigger the relay that powers the water/meth pump.
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Figure 31 HOLLEY TECHNICAL SUPPORT 1801 Russellville Road Bowling Green, KY 42101 270-781-9741 www.holley.
