Wolo HWK-1 Air Horn Wiring Kit - Manual

MODEL HWK-1
Air Horn Wiring Kit
Kit Is Designed For An Easy Hook-Up
Using Independent Horn Switch
INSTALLATION INSTRUCTIONS
Your purchase of a Wolo air horn wiring kit is a perfect choice for an easy and professional installation of any direct drive
air horn (no air tank) requiring a new horn button switch. Wolo’s products are manufactured with the finest materials.
Each wiring kit is tested to insure it meets all manufacturing specifications, before it is packaged. If you need help
installing this product, our technicians are available to answer your questions, Monday through Friday from 9 AM to 4
PM EST by calling 1-888-550-HORN (4676).
MOUNTING RELAY Fig. #1
(Relay is not included in kit)
1. The relay that was provided with your horn needs to be mounted in a dry location with the
terminals facing downward.
2. Use the relay’s mounting bracket as a template, mark the hole location and drill to
size 1/8”.
3. Secure the relay to the mounting location using the sheet metal screw provided.
CONNECT PLUG TO RELAY Fig. #2
4. Connect the wiring kit’s square female plug to the relay. NOTE: The plug can only mate with the
relay in one position.
HORN SWITCH WIRING & MOUNTING Fig. #3-5
5. Find a mounting location for the horn button switch (provided) that can be easily reached by the
vehicle’s driver. Use the mounting bracket of the horn button switche as a template, mark the
two hole locations and drill to size 1/8”. See Fig. #3
PLUG WIRING
6. SWITCH TERMINALS: There are two small screws on the bottom of the horn button switch,
which are electrical contacts that you will connect the wires to. See Fig. #4.
7. SWITCH TERMINAL-1: Connect the gray wire from the wiring kit’s plug to the horn button
switch. Cut the gray wire to length and strip back the plastic insulation so that 1/4” of wire is
exposed. Insert the wire into the spade terminal and crimp terminal. Make sure that the wire is
securely held in the terminal by lightly pulling on the wire while holding the terminal.
Connect the terminal to switch, place the spade terminal under one of the horn button’s contact
screw and tightened. NOTE: It does not make a difference which of the switch’s contact
screws is used to secure the gray wire. See Fig #4.
8. SWITCH TERMINAL-2: Connect the 12” gray wire with the spade terminal to the other
contact screw of the horn button switch. See Fig #4.
9. 12” GRAY WIRE: The other end of the gray wire is connected to (-) ground, such as the
negative (-) battery post or any clean metal body bolt. Cut the gray wire to length and strip back the plastic insulation
so that 1/4” of wire is exposed. Insert the wire into the spade terminal and crimp terminal. Make sure that the wire is
securely held in the terminal by lightly pulling on the wire while holding the terminal. Secure the spade terminal to (-)
ground. NOTE: IMPORTANT: Make sure that any paint or rust is cleaned from bolt and metal surface that will be in
contact with the terminal. (Sheet metal screw provided if needed.) See Fig #5.
Fig. 1
Fig. 2
Fig. 3
1/8” hole
1/8” hole
Relay not included