4
V. Wiring Your Valve & Air Compressor
Your train horn kit will use two completely independent circuits. One circuit will connect your horn trigger (push-
button intermittent switch, or toggled factory button) to your electric solenoid valve. The other circuit will
connect your accessory trigger (ignition wire, accessory wire) to your air source kit.
Valve Wiring Flow Chart (Circuit 1)
[Horn Trigger] » [Air Valve] » [Ground]
Air Source Wiring Flow Chart (Circuit 2)
[Accessory Trigger] » [(Small Red) Pressure Switch (Black)] » [Ground]
[12V DC Source] » [Inline Fuse] » [(Large Red) Pressure Switch (White)] » [(Red) Air Compressor (Black)] »
[Ground]
Circuit 1
1.
Begin by wiring your horn trigger.
a.
If you are intending to use your factory horn switch, start by locating the load wire of the horn
button (positive when horn button is depressed in a standard vehicle) and wiring it to the included
toggle switch (any side).
b.
If you are going to use a push button switch (intermittent toggle switch) wire a fused (5A) wire
from any 12 volt source desired (battery) to your switch (any side).
2.
Next wire your switch to any pole (red preferred) of your air valve.
3.
Wire the other side (black preferred) of the air valve to ground.
4.
Test your circuit by activating your trigger and listening for a quiet “click” sound from the valve.
Circuit 2
1.
Locate an accessory line in your vehicle
2.
Wire your accessory line to your pressure switch using the small red wire (Trigger).
3.
Ground your pressure switch using the small back wire (Ground).
4.
Locate an accessory line or other 12 volt DC source that is capable of a 26 amp load.
5.
Wire this line using an inline fuse (30A) to your pressure switch using the large red wire (12V DC Source).
6.
Connect the pressure switch to the air compressor using the large white wire (Load) from the pressure
switch and the red wire (12V DC Source) from the air compressor.
7.
Ground the other side of your air compressor (black wire) to ground.
8.
Your air compressor system will now turn on automatically when power is on (key is in “Accessory” or
“On” position and automatically turn itself off upon reaching destination.
You’re Done!
It’s time to test your horns! Send in your install photos to us for a chance to be featured on our website!
