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Harness Features:
Haltech Nexus R3 VCU connectors
Firewall grommet (51mm outer diameter)
All wires grouped, colour coded and labelled for
ease of identification
Connections for Haltech CAN devices (eg digital
displays, keypads, etc.)
Shielded crank (trigger) and cam (home) sensor
wires for reluctor or hall effect sensor types
11 x analog voltage inputs (AVIs) to connect
to voltage type sensors (eg MAP, temperature,
pressure, position)
HARNESS OVERVIEW
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Congratulations on purchasing a Haltech universal
wire-in harness for a Nexus R3 VCU.
This universal harness plugs directly into the Nexus
R3 VCU, and has unterminated cables that can be
wired to suit most popular engines at the other end.
All the unterminated wires are colour coded and
labelled in groups for easy identification.
This harness, in conjuction with the Nexus R3 VCU,
offers all the advanced tuning options available
through the Nexus Software Programmer (NSP).
This quick start guide will walk you through the
installation process including specific steps for
wiring typical sensors, actuators and other common
engine components.
WARNING!
This harness DOES NOT ground your engine.
Make sure your engine is sufficiently grounded.
A ground/earthing strap should be used to
ground your engine to the battery. Keep all wires
away from the exhaust manifold.
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Unterminated cabin wires
Unterminated
engine wires
Nexus R3 VCU connectors
CAN 1
expansion
connector
Wideband O2
sensor
connector
Unterminated
engine wires
Firewall grommet
What’s in the bag?
Nexus R3 VCU universal wire-in harness, 2.5m
(HT-183200).
6 x synchronised pulsed inputs (SPIs) for frequency
type sensors (eg speed sensors, flex fuel sensors)
2 x knock sensor inputs
1 x terminated wideband lambda sensor input
4 x 25A high current outputs (25A-HCO)
6 x digital pulsed outputs (DPOs)
6 x half bridge outputs (HBOs)
8 x ignition outputs
8 x injector outputs
CAN 2
connector
CAN 1
connector
