Nitrous Express Honda NXL User Manual

Page 3

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ELECTRICAL HOOK-UP

The NXL comes with a prefabricated wiring harness

to eliminate the need for running many wires.

Take the following steps to ensure that your Nitrous

system is wired properly.

Double check to ensure the battery is discon-

nected. Crimp female weatherpack connectors onto

both the N2O and Fuel solenoids.(See Illustration E).

Then crimp a male weatherpack connector onto the

wires from the wide open throttle switch. Mount the

relay on the front of the passenger side strut tower for

the harness to fit correctly. Plug the four wire con-

nector into the relay. Then take the large ring connec-

tor with two wires connected to it, (One white wire,

one large black wire with a white tracer) and connect

it to the factory grounding point on the front side

of the transmission. Plug the two male connectors

into the female solenoid connnectors. Then plug the

male weather pack connector into the female connec-

tor on the wide open throttle switch. Find the other

large ring connnector with only one wire connected

to it. (Large black wire without a tracer) This is the

power wire for your nitrous system. Connect it to the

positive side of your fuse block. Remove the battery

to access the rubber grommet in the fire wall. This

grommet will allow you to run your wires safely and

cleanly through the fire wall. Take the single red wire

and run it through the grommet. For ease of installa-

tion, tape another wire to this red wire (this will be

the power wire for your toggle) and route them both

into the interior of the car. The red wire attaches to

the “Accessory” terminal on the toggle switch. Attach

the other wire to the “Power” terminal of your toggle

switch. You can now connect the remaining wire that

was run with the red wire to a keyed 12-volt source.

ILLUSTRATION E

TESTING AND USING THE SYSTEM

All NX systems are designed for off road

usage. Use extreme caution and observe all safety

precautions (see your vehicles owner’s manual).

Select a suitable test area; your local racetrack is best.

Arm the system with the cockpit N2O arming switch.

Gently launch the vehicle, gradually accelerating

to wide-open throttle. When WOT is achieved, a

noticeable surge of power should be produced. If

not, stop and recheck all installation procedures.

Call the factory tech line if the problem cannot be

located. NOTE: All vehicles equipped with factory

rev-limiters should take extreme care not to over-rev

the engine. If the rev-limiter is engaged with the N2O

system on, serious engine damage could result. An

aftermarket RPM window switch (NX PN# 18959 or

PN# 18959M) should be used to disengage the N2O

system 200 RPM’s before the rev-limiter activates.

Your NX system is now ready for regular usage.

WIRING SCHEMATIC

SAFETY TIPS

Do not attempt to start engine if nitrous has

been accidentally injected while the engine was not

running. Disconnect coil wire and turn motor with

throttle wide open for several revolutions before

attempting to restart. If it is not possible to disable the

ignition, then the spark plugs must be removed and the

engine cleared of all nitrous before attempting to start

engine.

1. Never permit oil, grease, or any other readily

combustible substance to come into contact with

nitrous cylinders, valves, solenoids, hoses and fit-

tings. Oil and certain gases (such as oxygen and

nitrous oxide) may combine to produce a flam-

mable condition.

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