Wolo 416 User Manual

4. IMPORTANT: Mount trumpets with the open ends facing down. This will prevent
water from entering into the trumpets and compressor. Water damage to the

horn’s component parts is not covered by our factory warranty.

5. Using plastic air tubing included in the kit, cut to proper length and install
referring to Figure 3. CAUTION: Avoid making any kinks or sharp bend in tubing
that will restrict the airflow and alter the horn’s sound.

ELECTRICAL CONNECTIONS USING VEHICLE’S
FACTORY HORN SWITCH

INSTALLATION INSTRUCTIONS

For Model 416 Euro Hi/Lo Horn

The addition of a Wolo horn kit in your vehicle will provide an extra level of sound. The Wolo name, with more than twenty
years experience, is your guarantee of a superior horn product. If you need help installing your new Wolo horn, our
technicians are available to answer your questions, Monday thru Friday, from 9 AM to 4 PM EST at 1-888-550-HORN
(4676).

1. Install the compressor in the engine compartment in a
dry location and safe from engine and exhaust manifold
heat. The compressor must be mounted on a metal body
surface. If your compressor is not bolted to metal, use
a piece of 16-gauge wire and connect one end under
mounting bolt, and ground other end under any metal
body bolt that is clean of print and rust. Compressor must
be grounded. (See Figure 1).

2. To secure the compressor, drill a 3/16-inch hole. Mount
the compressor vertically (air outlets on top). Install the
head of the bolt into the slot on the compressor’s
housing. Secure the compressor to the vehicle using the
lock washer/nut provided (Figure 1).

3. Position each trumpet with open end facing down, mark
and drill a 1/4-inch hole for each trumpet. Secure to
vehicle referring to Figure 2. Use mounting hardware in
order shown

– spacer, lock washer/nut.

Put a few drops of
Light oil (SAE-10)
into the hole
on Compressor
marked “Oil” every
6 months

A. For two (2) wire systems: If vehicle’s factory horn has two (2) terminals, simply transfer the wires to the

compressor’s terminals. IMPORTANT: when testing the horns, if compressor motor turns on but the horn does not
sound, reverse the wires connected at the bottom of the compressor.

B. For one (1) wire system: If vehicle’s factory horn has one (1) terminal simply transfer wire to the compressor’s

positive (+) terminal. The compressors’ negative terminal is connected to any metal body ground. Connection
should be free of rust or paint.

Fig. 1

Fig. 2

Fig. 3

ELECTRICAL CONNECTIONS FOR A NEW HORN BUTTON SWITCH:

Install the relay in a dry location with the terminals facing downward near the compressor. Refer to Figure 4 for wiring.

A. Connect relay terminal 87 to

the positive terminal at the
bottom of the compressor. Use
no less than a 16-gauge wire.

B. Connect relay terminal 85 to

the horn switch terminal. The
other horn switch terminal is
connected to ground (body of
vehicle). An 18-gauge wire is
suggested for this connection.

C. Connect relay terminals 30/86

to positive (+) 12-volt battery,
alternator or accessories. Use
16-gauge or heavier wire. A
20-ampere fuse is suggested
to be installed as shown in
Figure D.

TOGGLE SWITCH INSTALLATION

The toggle switch included in kit, will control the horn’s tone:
Steady Tones / Euro Hi-Lo Tone.

A. Mount the toggle switch in an accessible place inside the vehicle.
B. One terminal of the toggle switch is connected to the compressor’s side

terminal. Use insulated terminal provided to make connection (Figure 5).

C. The other toggle switch terminal is connected to the positive (+) terminal

at the bottom of the compressor. (Figure 5)

Warranty

Wolo Manufacturing Corporation (“Wolo”) warranties to the original purchaser, for three months from the date of purchase, that
this product is free from defects in workmanship and materials. If there is such a proven defect, Wolo, at its option, will either
repair or replace the item free of charge, if it is returned to Wolo within three months from the date of purchase together with
proof of purchase as described below. Wolo reserves the right to inspect any defect prior to settling any warranty claim by repair
or replacement. This warranty is limited as above provided and Wolo will not be responsible for fire or other casualty or accident,
due to neglect, abuse, abnormal use, modifications, faulty installation of this product, or natural causes.

ANY EXPRESSED WARRANTY NOT PROVIDED HEREIN IS EXCLUDED AND DISCLAIMED. THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY LIMITED TO A TERM OF THREE (3)
MONTHS. UNDER NO CIRCUMSTANCES SHALL WOLO BE LIABLE TO PURCHASER OR ANY OTHER PERSON FOR ANY
SPECIAL OR CONSEQUENTIAL DAMAGES, WHETHER ARISING OUT OF BREACH OF WARRANTY OR OTHERWISE.

To obtain warranty service, return the product prepaid, and include the original bill of sale showing the date of purchase. Provide with
the return a brief description of the problem. Also, include with the return a check or money order in the amount of $10.00 to cover
return shipping. Mail to:

Wolo Manufacturing Corp.

One Saxwood Street, Deer Park, NY 11729

Attn: Warranty Service

E-mail: [e-mail]

Fig. 5

Fig. 4

COMPRESSOR

RELAY

HORN SWITCH

GROUND

BATTERY

GROUND

20 AMP FUSE

RECAP OF TERMINAL CONNECTIONS

Terminals 30/86: the two (2) terminals are connected to 12-volt positive (+) using a fuse.
Terminal 85: connect horn switch negative (-).
Terminal 87: connect positive (+) terminal of compressor.

© 2006 Wolo Mfg. Corp All Rights Reserved.