
Engine management
No ECU included
Haltech Nexus Rebel LS ECU Only (HT-220001)
SKU: HT-220001
Engine management
No ECU included
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Manufacturer Limited Warranty

Haltech Nexus Rebel LS ECU Only (HT-220001)
Product details
Description
The Haltech Nexus Rebel LS ECU Only (HT-220001) is the bare Rebel LS engine control unit with no harness. It is the right pick when you already own a Rebel LS main harness, are replacing a unit, or want to build your own harness package from Haltech's Rebel sub-harness range.
The Rebel LS is one of Haltech's advanced engine control units in the Nexus range, offering far more than basic control of your GM Gen III or Gen IV LS engine. It works as an engine control unit, a wideband O2 controller, a data logger, and a Wi-Fi module, all integrated into a single unit. Paired with a Nexus Rebel LS terminated harness, it provides a comprehensive range of performance and tuning capabilities for GM LS engines, and start-up is a breeze thanks to the LS Set-up Wizard in NSP software or the Haltech Connect app.
Features
- ECU designed from the ground up to suit GM's popular LS engine platform
- Supports both Gen III (LS1/LS6) and Gen IV (LS2/LS3) engines
- Built-in wideband O2 controller, data logging and Wi-Fi
- 8 injector outputs and 8 ignition outputs
- 5 Digital Pulsed Outputs (up to 3A each) and an auxiliary 25A output
- 2 Analog Voltage Inputs (0-5V) and 4 Synchronized Pulsed Inputs
- Easy set-up via the LS Set-up Wizard in NSP or the Haltech Connect app
- CAN integration with Haltech iC-7 dashes, PD16 PDMs (up to four), CAN keypads, EGT and wideband expanders
WHAT'S IN THE BOX?
Rebel LS ECU only. No main harness, sub-harnesses, sensors or hardware are included.
To run the ECU you will need the Nexus Rebel LS main terminated harness (HT-186500) plus the throttle, injector and transmission sub-harnesses to suit your engine. If you want everything in one box, see the complete Rebel LS kits: HT-220201 (Gen III, cable throttle, EV1 injectors, manual transmission) and HT-220204 (Gen IV, 6-pin DBW, EV6 injectors, manual transmission).
Rebel LS ECU Pinout
Full pin-by-pin map of the three Nexus Rebel LS ECU connectors. Wire colors shown are those of the matching HT-186500 terminated harness, which is sold separately.
Connector A
34-pin, Keyway Type 1 - injectors, ignition, outputs and CAN.
Main harness side view
| Pin | Function | HT-186500 Wire Color |
|---|---|---|
| A1 | Injector 1 | Blue |
| A2 | Injector 2 | Blue/Black |
| A3 | Injector 3 | Blue/Brown |
| A4 | Injector 4 | Blue/Red |
| A5 | Injector 5 | Blue/Orange |
| A6 | Injector 6 | Blue/Yellow |
| A7 | Injector 7 | Blue/Green |
| A8 | Injector 8 | Blue/Violet |
| A9 | Outputs / DPO 1 | Violet/Black |
| A10 | Power Ground Output | Black |
| A11 | Power Ground Output | Black |
| A12 | Outputs / DPO 2 | Violet/Brown |
| A13 | Ignition Switch Input | Pink |
| A14 | Outputs / DPO 3 | Violet/Red |
| A15 | Outputs / DPO 4 | Violet/Orange |
| A16 | Outputs / DPO 5 | Violet/Yellow |
| A17 | Tacho Output | Violet/Green |
| A18 | Transmission Supply | Pink/Red |
| A19 | Throttle / IAC 1 | Brown/Black |
| A20 | Throttle / IAC 2 | Brown/Red |
| A21 | Throttle / IAC 3 | Brown/Green |
| A22 | Throttle / IAC 4 | Brown/Pink |
| A23 | CAN H | White |
| A24 | CAN L | Blue |
| A25 | CAN Supply | Pink/Brown |
| A26 | Unused | Unused |
| A27 | Ignition 1 | Yellow/Black |
| A28 | Ignition 2 | Yellow/Red |
| A29 | Ignition 3 | Yellow/Orange |
| A30 | Ignition 4 | Yellow/Green |
| A31 | Ignition 5 | Yellow/Brown |
| A32 | Ignition 6 | Yellow/Blue |
| A33 | Ignition 7 | Yellow/Violet |
| A34 | Ignition 8 | Yellow/Gray |
Connector C
34-pin, Keyway Type 2 - sensors, inputs, knock and wideband.
Main harness side view
| Pin | Function | HT-186500 Wire Color |
|---|---|---|
| C1 | Crank | Yellow |
| C2 | Unused | Unused |
| C3 | Cam | Yellow |
| C4 | Unused | Unused |
| C5 | Inputs / SPI 1 | Gray/Brown |
| C6 | Inputs / SPI 2 | Gray/Red |
| C7 | Inputs / SPI 3 | Gray/Orange |
| C8 | Inputs / SPI 4 | Gray/Yellow |
| C9 | Crank / Cam Supply | Orange/White |
| C10 | Inputs / AVI 1 | White |
| C11 | Inputs / AVI 2 | White/Yellow |
| C12 | Fuel Pressure | White/Gray |
| C13 | Oil Pressure | White/Violet |
| C14 | MAP | White/Green |
| C15 | Throttle TPS 1 | White/Orange |
| C16 | Throttle TPS 2 | White/Black |
| C17 | APP 1 | White/Brown |
| C18 | APP 2 | White/Red |
| C19 | Transmission | Gray/Pink |
| C20 | Transmission / VSS | Gray/L.Green |
| C21 | Unused | Unused |
| C22 | Unused | Unused |
| C23 | Knock Odd | Black/Blue |
| C24 | Knock Even | Black/Green |
| C25 | +5V Sensor Supply | Orange |
| C26 | Sensor Ground | Black/White |
| C27 | Coolant Temperature | L.Green |
| C28 | Air Temperature | L.Green/Black |
| C29 | WBI 1 Heater + | Gray |
| C30 | WBI 1 Input | Yellow |
| C31 | WBI 1 Pump | Red |
| C32 | WBI 1 Nernst | Black |
| C33 | WBI 1 Heater - | White |
| C34 | WBI 1 Cal | Green |
Connector E
4-pin, DTP - main power feeds for injectors, ignition, fuel pump and fan.
Main harness side view
| Pin | Function | HT-186500 Wire Color |
|---|---|---|
| E1 | AX25+ (Auxiliary 25A) | Red/Blue |
| E2 | Fuel Pump | Red/Yellow |
| E3 | Fan | Red/Orange |
| E4 | Inj/Ign Supply | Red/Green |
Pinout data taken from the Haltech HT-186500 Nexus Rebel LS terminated harness Quick Start Guide. This listing is the ECU only; the HT-186500 main harness and its sub-harnesses are sold separately.
REBEL LS FAQS
This looks a lot like an R3, is it the same thing?
No. For practical reasons, the case is the same as an R3, but that's about it. The Rebel LS is intended to be a cost-effective, quick, and easy solution for running LS-engined vehicles, and thus the specs and functionality are quite different from the R3.
Can I integrate the Rebel LS with other Haltech products?
Yes, the Rebel LS is fully compatible with the iC-7 dash, PD16 PDM (up to four of them), EGTs, multiple external wideband sensors, CAN keypads, etc.
Will it support my automatic transmission?
The Rebel LS does not control an automatic transmission on its own. GM 6L-series automatics can be run with the Nexus Ti6L Transmission Interface Kit (HT-196002).
Does this come with a harness?
No. This listing is the ECU only. Choose the HT-220201 or HT-220204 kit if you need the harness included.
Tuned By Shawn is a Platinum Haltech Dealer. Questions on compatibility with your engine or build, send them through before ordering and we will confirm the right part.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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