HornBlasters AH-S4 User Manual

Shocker XL Installation Instructions

Planning Your Installation

If this isn’t the second time you’re reading the instructions, keep reading!

• Plan out the location of each component before starting your installation.

• Make sure you have enough airline and wire to install the system before beginning.

• Make sure mounting locations are secure and void of debris. The horns are ideal for mounting under the
cab, along the frame rails, in front of your radiator, etc. To prevent your horns from being muffled, leave
plenty of space in front of them to allow them to project (horns facing down is ideal).

• The electric valve may be mounted anywhere in-line between the air tank and the horns but the less
tubing used between the valve and horns, the sharper the crisp!

• The horns should not be mounted where they will be submerged or will receive any kind of impact.

Installing Your Horns

ning the panel nut for the rear mount and the nut for the front mount, torque only enough to secure the
horn firmly in place.

• Drill a 7/16” hole for the rear mount first, then mark a location for the 3/16” front mount hole. When tighte

Installing Your Valve

from your tank and towards your horns. On some valves the inlet port may also be marked as ‘in’ or ‘inlet’.
The air valve may be mounted in any direction but it is recommended that it is mounted vertically.

• Locate the directional arrow on the valve body, for the direction of air flow. The arrow should point away

Wiring Your Valve

Once you have grounded one of the valve terminals, please choose one of the next two options for the switch.

• Option 1 (using a toggle switch & steering wheel): Wire the other terminal to a toggle switch and then into
your electric horn 12 volt line under the hood. This will let you blow the horns from the steering wheel
button with an On/Off switch.

• Option 2 (use a push-button switch): Wire the other terminal to a momentary button switch in a convenient
location and wire the other side of the switch to a 12 volt power source.
Test your solenoid valve by activating the switch. This should cause the valve to click if wired correctly.

Running Air Line the the Horns

It is very important to turn o all compressors and drain the tanks before you start connecting the horns. Before

cutting any air tubing, make sure to double check your measurements. Make sure to cut equal lengths of air line to connect
each horn to the manifold or the horns may sound at dierent times. We recommend cutting your lengths with at least an
extra inch per line just to be safe. Unlike compression ttings, the push to pull connectors can be used multiple times. The air
valve should connect to the center tting of the 4-point banjo tting. When threading any ttings make sure to use Teon
tape or lock-tight to prevent air leaks. Some ttings may already have pipe sealant applied on their threads for your conve­nience. The air valve may be mounted in any direction but it is preferred that it is mounted vertically.

Air Horns to Tank:

[Air Tank] » [1/2” NPT M to 1/2” PTC Fitting] » [1/2” Air Line] » [1/2” NPT M to 1/2” PTC Fitting] » [Air Valve] » [1/2” to 4x

5/16” NPT M Banjo Fitting] » [5/16” Air Line] » [5/16in P2P to 1/8in NPT F Elbow] » [Rear Horn Mount]

1. Plan out the ttings placement before you begin and make sure you understand the correct order.

2. Make sure that your tank is empty of air and that the compressor is not running during installation.

3. Start by cutting equal lengths of 5/16” tubing to run from each horn to the banjo tting.

4. Install your banjo tting into the outlet port of your 1/2” air valve. If the valve has a directional arrow on its body, the
arrow starts with the inlet and points out the outlet; the arrow should point towards your horns.

5. Plumb each horn to the banjo tting, making sure that the lines are inserted rmly into their sockets. You do not use
Teon tape or pipe sealant with the PVC ttings.

6. Finally connect your air valves inlet port to your air tank using 1/2” air line using the 1/2” M NPT to 1/2” PTC ttings. Make
sure to use a side or top port on your tank so that condensation will not drain in to your air valve.

Finishing Up

The nal step is testing your installation! Turn you air system back on and once the tank is full, check for air leaks on the ttings
throughout the whole system. If you see any problems, re-plumb those ttings as you deem neccessary. You’re almost done!

Get Involved In The Train Horn Community

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Trainhornforums.com is the largest train horn community online and provides a place to share photos of your ride, post
videos, catch up with other train horn and HornBlasters fans, meet other train horn enthusiasts, or even nd help with a
complicated question.

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HornBlasters, Inc.

39440 Pattie Road

Zephyrhills, FL 33540

Phone: [phone]

Fax: [phone]

email: [e-mail]