Route wiring harness and connect sensors, Power relays – Haltech IG5 User Manual

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1.3.6. Route Wiring Harness and Connect Sensors

Lay the main wiring harness out in the engine bay with the sensors mounted to ascertain the
best fit for the harness. Pass the wiring loom through a hole in the engine bay firewall and
into the passenger compartment where the ECU will be mounted. Either use an existing hole
or cut a new hole to suit. Use a rubber grommet or similar device to protect the harness from
being damaged by rubbing on the sharp edge of the hole.

WARNING:

DO NOT ALLOW THE HARNESS TO TOUCH HOT EXHAUST

PARTS INCLUDING MANIFOLDS OR TURBOCHARGER'S.

TRY TO ROUTE THE MAIN HARNESS AWAY FROM HIGH

VOLTAGE IGNITION LEADS. UNDER NO CIRCUMSTANCES RUN

ANY WIRING PARALLEL TO OR IN CONTACT WITH THE

IGNITION LEADS.

Note: Be neat. Run the harness in a tidy fashion. Try to run the harness along

paths used by original wiring. Use nylon cable ties to secure the harness in

place, but do not stress the wiring or connectors.

Once the harness is fitted, connect all the sensors to their appropriate plugs.

1.3.7. Power Relays

There is one relay used with the Haltech IG5, (the Main Power Relay)

It should be mounted on the firewall or an inner guard with the connector terminals to the
bottom as shown in the diagram.