NEXUS R5 UNIVERSAL WIRING DIAGRAM

NOTES
INJECTOR 9 [LL]
1 INJECTORS
NOTES NOTES 2
INJECTOR 10
18 X INJECTOR OUTPUTS
[LL/B]

HBO
[L] I NJEC TOR 1 HBO 1 [BR/B] INJECTOR 11 [LL/BR]
INJECTORS 1 19 3 CURRENT CONTROLLED
4 X HALF BRIDGE OUTPUTS

[L/B] 18 X INJECTOR OUTPUTS HIGH/LOW SIDE DRIVE INJECTOR 12 0A TO 4A PEAK CURRENT [LL/R]
INJECTOR 2 HBO 2 [BR/R]
2 20 8A MAX CURRENT 4 0A TO 2A HOLD CURRENT
18kHz SWITCHING SPEED
CURRENT CONTROLLED (DBW MODE)
[L/BR] INJECTOR 3 HBO 3 [BR/G] INJECTOR 13 ALL SPARE
[LL/O]
OVERCURRENT PROTECTED 5
0A TO 4A PEAK CURRENT 3 21 INJECTOR OUTPUTS
0A TO 2A HOLD CURRENT RECOMMENDED WIRE GAUGE: CAN BE USED AS
[L/R] INJECTOR 4 HBO 4 20 AWG [BR/P] INJECTOR 14 GENERIC DPO’S WITH
[LL/Y]
6

34 PIN CONNECTOR (A)

ALL SPARE 4 22 2A MAX OUTPUT
INJECTOR OUTPUTS OUTPUT: BATTERY VOLTAGE
[L/O] CAN BE USED AS OR GROUND INJECTOR 15 [LL/G]
INJECTOR 5
GENERIC DPO’S WITH 5 7
2A MAX OUTPUT WIRE INJECTOR

26 PIN CONNECTOR (B)

[L/Y] INJECTOR 6 INJECTOR 16 OUTPUT TO CYLINDER [LL/V]
WIRE INJECTOR 6 CAN (ISO 11898) 8 NUMBER
OUTPUT TO CYLINDER
SUPPORTS SPEEDS UP TO 1MBit/s
[L/G] NUMBER INJECTOR 7 CAN 1 H ]W[ INJECTOR 17 [LL/GY]
7 23 HALTECH BUS
14 RECOMMENDED WIRE GAUGE:
RECOMMENDED WIRE GAUGE:
20 AWG SUPPORTS ALL HALTECH 20 AWG
[L/V] INJECTOR 8 CAN 1 L [L] INJECTOR 18 [LL/L]
EXPANSION PRODUCTS
OUTPUT: GROUND
8 24 20
OUTPUT: GROUND
VEHICLE BUS
SELECTABLE PRECONFIGURED
VEHICLE CAN INTERFACE
OBDII COMPLIANT
SPI 7 SPI [GY/G]
9 10 X SYNCHRONISED
PULSED INPUTS
SPI 8 SUPPORTS DIGITAL INPUTS [GY/V]
10 SUPPORTS 0-5V ANALOG
INPUTS
[B]
IGN SWITCH [P] SPI 9 [GY/L]
BATTERY GROUND BATTERY GND IGN SW INPUT
11
22.5KHz MAX FREQUENCY
10 13 OUTPUT AND INPUT SWITCHABLE 1K PULL-UP
GROUND OUT FOR SHIELDS,
LOW-CURRENT CAN DEVICES CONNECT EACH CONNECTION TO RECOMMENDED WIRE GAUGE:
[B] DIGITAL SENSORS BATTERY GND IGN SW PWR EACH SIDE OF IGNITION SWITCH [R/L] SPI 10 22 AWG [GY/W]
11 26 OR 12 MEASUREMENT RANGE:
3A MAX LOAD PER PIN CONNECT IGN SW INPUT TO -10V TO 10V
ANY SWITCHED 12V SOURCE

CAN 3 H CAN (ISO 11898) ]W[

13 SUPPORTS SPEEDS UP TO 1MBit/s

CAN 3 L SEE CAN 1 [L]

19 (34 PIN CONNECTOR (A))
FOR MORE INFORMATION
[V/B] DPO DPO 1 IGNITION 1 IGNITION [Y/B]
9 27
12 X IGNITION OUTPUTS
[V/BR] DPO 2 IGNITION 2 [Y/R] IGNITION 9 IGNITION [LY/B]
8 X DIGITAL PULSED OUTPUTS 12 28 3A MAX CURRENT 15
OVERCURRENT PROTECTED 12 X IGNITION OUTPUTS
[V/R] DPO 3 IGNITION 3 FLYBACK PROTECTED [Y/O] IGNITION 10 [LY/R]
LOW SIDE DRIVE 14 29 GLOBAL 12V OR 5V PULL-UP 16
VOLTAGE SEE IGNITION OUTPUTS 1-8
3A MAX CURRENT
[V/O] DPO 4 IGNITION 4 PER OUTPUT 270R PULL-UP [Y/G] IGNITION 11 (34 PIN CONNECTOR (A)) [LY/O]
10 kHz SWITCHING SPEED 15 30 ENABLE 17 FOR MORE INFORMATION
OVERCURRENT PROTECTED VOLTAGE MONITORED
[V/Y] DPO 5 IGNITION 5 [Y/BR] IGNITION 12 [LY/G]
UNUSED IGNITION OUPUTS
FLYBACK PROTECTED
16 31 CAN BE USED AS GENERIC 18
INDIVIDUAL 4K7 PULL-UP DPO’S WITH 3A MAX OUTPUT OUTPUT: GROUND
[V/G] TO 5V OR 12V OR DISABLE
DPO 6 IGNITION 6 [Y/L]
17 32 WIRE IGNITION OUTPUT
TO CYLINDER NUMBER [Y/V]
[B/Y] DPO 7 IGNITION 7 WBC B1 (HTR+) [GY]
33 FOR DIRECT FIRE WIDEBAND SENSOR
RECOMMENDED WIRE GAUGE:
18 21
20 AWG RECOMMENDED WIRE GAUGE:
INPUT
[V] DPO 8 IGNITION 8 [Y/GY] WBC B2 (COM) [Y]
25 34 20 AWG
22 COMPATIBLE WITH BOSCH
OUTPUT: GROUND OUTPUT: GROUND LSU 4.9 AND NTK SENSORS
WBC B3 (PUMP) SELECT WHICH SENSOR IS [R]
23 BEING USED IN THE
SOFTWARE
WBC B4 (CELL) [B]
24 COMPATIBLE WITH ETHANOL
MUST BE INSTALLED PRE
CATALYTIC CONVERTOR
WBC B5 (HTR-) [W]
25 OPTIONAL WIDEBAND
HARDWARE PACK MAY BE
PURCHASED IF REQUIRED
WBC B6 (CAL-R) (HT-010746 FOR LSU4.9) [G]
26 (HT-010747 FOR NTK)

CONNECTOR A CONNECTOR B
34 PIN KEYWAY 1 26 PIN KEYWAY 1

1 9
1 7
SEE QSG FOR WIRING
10 17 8 13
APPLICATION EXAMPLES LEGEND - WIRE COLOUR NEXUS R5 UNIVERSAL WIRING DIAGRAM
14 19
18 25 B = BLACK BR = BROWN G = GREEN GY = GREY L = BLUE
20 26 LL = LIGHT BLUE LG = LIGHT GREEN LY = LIGHT YELLOW O = ORANGE
26 34 HALTECH ENGINE MANAGEMENT SYSTEMS
P = PINK R = RED V = VIOLET Y = YELLOW W = WHITE
WHEN TWO COLOURS ARE USED IN A WIRE BY THE ALPHABETICAL CODE,
DOCUMENT REVISION: 1.0 HARNESS REVISION: 1.0
THE FIRST LETTER INDICATES THE BASIC WIRE COLOUR,
LOOKING INTO CONNECTOR ON ECU LOOKING INTO CONNECTOR ON ECU
THE SECOND COLOUR INDICATES THE COLOUR OF THE STRIPE. DATE: 10TH FEBRUARY 2020 SHEET 1 OF 2
 NOTES
[P/R]
1*
HC OUT 1
8A HCO
HC OUT 2 12 X 8A HIGH CURRENT OUTPUTS [P/BR]
2
NOTES 3
HC OUT 3 [P/B]
HIGH SIDE DRIVE

AVI 1 [W] HC OUT 4 8A MAX CURRENT [P/O]

10 AVI 4
100Hz SWITCHING SPEED

NOTES 11
AVI 2 23 X ANALOG VOLTAGE INPUTS [W/Y]
5
HC OUT 5 CAPABLE OF 0-100% DUTY [P/Y]
OVERCURRENT PROTECTED

[Y] AVI 3 [W/GY] HC OUT 6 FLYBACK PROTECTED [P/G]

CRANK (TRIGGER) INPUT TRIGGER + 6
1 12

26 PIN CONNECTOR (D)

INDIVIDUAL SOFTWARE SOFTWARE PROGRAMMABLE
SELECTABLE 1K PULL-UP FUSE CURRENT [P/V]
7*
SHIELDED AVI 4 [W/V] HC OUT 7
[G] TRIGGER - TO 5V
4 CORE [GY]
2 13 SOFTWARE PROGRAMMABLE
SWITCHED USER DEFINABLE INPUTS DELAY DURATION ONCE FUSE
[P/L]
8*
+12V (HCO) AVI 5 CAN BE ALLOCATED TO [W/G] HC OUT 8 “BLOWS” BEFORE RETRY
[R]
14 AVAILABLE FUNCTIONS IN SOFTWARE PROGRAMMABLE
SIGNAL THE SOFTWARE NUMBER OF RETRIES
[P/GY]
13 *
[B] GND AVI 6 [W/O] HC OUT 9
15

34 PIN CONNECTOR (C)

30V MAX INPUT VOLTAGE
NOTE: SHIELDED CABLES SHOULD BE
1000 SAMPLES/SECOND RECOMMENDED WIRE GAUGE: [P/W]
14 *
AVI 7 [W/B] HC OUT 10
EARTHED AT ONE END OF CABLE ONLY
16 18 AWG
1.5kHz MAX INPUT FREQUENCY

[Y] HOME + AVI 8 ALL AVIS CAN BE USED FOR

[W/BR]
19
* HC OUT 11 * PLUG ALLOWS FOR A [P/LG]
CAM (HOME) INPUT 3 17 NARROWBAND O2 AND DBW LARGER GAUGE WIRE (16AWG)
IF REQUIRED
[G] SHIELDED AVI 9 [W/R] * HC OUT 12 [P/LL]
4 CORE [GY/B] HOME - 4 18 20
OUTPUT: BATTERY VOLTAGE
SWITCHED
[R] +12V (HCO) AVI 10 RECOMMENDED WIRE GAUGE: [LG]
27 22 AWG

SIGNAL
[B] GND AVI 11 [LG/B] SIGNAL GND (B) SIGNAL GROUND [B/GY]
28 INPUT: -10V TO 30V
9
TO BATTERY GND 500mA MAX OUTPUT CURRENT
(A10 OR A11)
SENSOR +5V (B) +5V SENSOR SUPPLY [O/R]
15
200mA MAX OUTPUT CURRENT

SPI ]W[
[GY/BR] SPI 1 CAN 2 H CAN (ISO 11898) AVI 12 AVI [LG/BR]
10 X SYNCHRONISED 5 21 10
PULSED INPUTS SUPPORTS SPEEDS UP TO 1MBit/s
[GY/R] SPI 2 CAN 2 L SEE CAN 1
[L]
SUPPORTS RELUCTOR INPUTS AVI 13 23 X ANALOG VOLTAGE INPUTS [LG/R]
6 22 (34 PIN CONNECTOR (A)) 11
SUPPORTS DIGITAL INPUTS
FOR MORE INFORMATION
[GY/O] SUPPORTS 0-5V ANALOG
INPUTS SPI 3 AVI 14 [LG/O]
1 MILLION SAMPLES/SECOND
7 12 INDIVIDUAL SOFTWARE
22.5kHz MAX FREQUENCY SELECTABLE 1K PULL-UP
[GY/Y] SPI 4 AVI 15 TO 5V [LG/Y]
25V MAX INPUT VOLTAGE 8 16
SWITCHABLE 1K PULL-UP SENSOR +8V +8V SENSOR SUPPLY [O/W]
[GY/P] SPI 5 9 USER DEFINABLE INPUTS
200mA MAX OUTPUT CURRENT AVI 16 CAN BE ALLOCATED TO [LG/G]
RECOMMENDED WIRE GAUGE: 19 17 AVAILABLE FUNCTIONS IN
22 AWG
THE SOFTWARE
[GY/LG] SPI 6 SENSOR +5V (A) +5V SENSOR SUPPLY [O]
[LG/V]
20 25 AVI 17
MEASUREMENT RANGE:
-10V TO 10V
200mA MAX OUTPUT CURRENT 18 30V MAX INPUT VOLTAGE

AVI 18 1000 SAMPLES/SECOND [G/B]

SIGNAL GND (A) SIGNAL GROUND [B/W] 21
26 1.5kHz MAX INPUT FREQUENCY
500mA MAX OUTPUT CURRENT
AVI 19 [G/BR]
22 ALL AVIS CAN BE USED FOR
SHIELDED NARROWBAND O2 AND DBW
[W] 2 CORE [B/L] KNOCK 1
23 AVI 20 [G/R]
23
SIGNAL
WBC A1 (HTR+) [GY]
[B] GND
29 WIDEBAND SENSOR AVI 21 [G/O]
INPUT 24 RECOMMENDED WIRE GAUGE:
WBC A2 (COM) [Y] 22 AWG
30 COMPATIBLE WITH BOSCH AVI 22 [G/Y]
NOTE: SHIELDED CABLES SHOULD BE
LSU 4.9 AND NTK SENSORS 25
EARTHED AT ONE END OF CABLE ONLY WBC A3 (PUMP) SELECT WHICH SENSOR IS [R]
31 BEING USED IN THE AVI 23 [G/V]
SOFTWARE 26 INPUT: -10V TO 30V
WBC A4 (CELL) [B]
32 COMPATIBLE WITH ETHANOL
MUST BE INSTALLED PRE
SHIELDED CATALYTIC CONVERTOR
[W] KNOCK 2 WBC A5 (HTR-) [W]
2 CORE [B/G] 24 33 OPTIONAL WIDEBAND
HARDWARE PACK MAY BE
SIGNAL PURCHASED IF REQUIRED
[B] GND WBC A6 (CAL-R) (HT-010746 FOR LSU4.9) [G] 25A HCO

4 PIN (E)
34

CONNECTOR
(HT-010747 FOR NTK) VHC OUT 1 4 X 25A HIGH CURRENT OUTPUTS [R/L]
1 HIGH/LOW SIDE DRIVE
25A MAX CURRENT
TO BATTERY GND VHC OUT 2 CAPABLE OF 0-100% DUTY
[R/Y]
(A10 OR A11) 2 1kHz SWITCHING SPEED
SOFTWARE PROGRAMMABLE
VHC OUT 3 FUSE CURRENT, DELAY AND
[R/O]
3 NO. OF RETRIES
OVERCURRENT PROTECTION
CONNECTOR C CONNECTOR D CONNECTOR E VHC OUT 4 [R/G]
34 PIN KEYWAY 2 26 PIN KEYWAY 3 4 PIN DTP
4 RECOMMENDED WIRE GAUGE:
12 AWG
OUTPUT: BATTERY VOLTAGE
OR GROUND

1 9
1 7
SEE QSG FOR WIRING
10 17 8 13
APPLICATION EXAMPLES LEGEND - WIRE COLOUR NEXUS R5 UNIVERSAL WIRING DIAGRAM
14 19
18 25 B = BLACK BR = BROWN G = GREEN GY = GREY L = BLUE
20 26 LL = LIGHT BLUE LG = LIGHT GREEN LY = LIGHT YELLOW O = ORANGE
26 34 HALTECH ENGINE MANAGEMENT SYSTEMS
P = PINK R = RED V = VIOLET Y = YELLOW W = WHITE
WHEN TWO COLOURS ARE USED IN A WIRE BY THE ALPHABETICAL CODE,
DOCUMENT REVISION: 1.0 HARNESS REVISION: 1.0
LOOKING INTO PLUG (WIRE SIDE)
THE FIRST LETTER INDICATES THE BASIC WIRE COLOUR,
LOOKING INTO CONNECTOR ON ECU LOOKING INTO CONNECTOR ON ECU
THE SECOND COLOUR INDICATES THE COLOUR OF THE STRIPE. DATE: 10TH FEBRUARY 2020 SHEET 2 OF 2