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.

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

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.

C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
C32
C33
C34

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.

E4
E1
E3
E2

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
Active function Unused / spare position

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.