HornBlasters HK-S4-540D - Manual (Page 5)

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 Pressure Switch Wiring Flow Chart (Circuit 2)
[Accessory Trigger] » [(Small Red) Pressure Switch (Black)] » [Ground]
[12V DC Source] » [(Large Red) Pressure Switch (White)] » [(Pin 86) Relay (Ping 85)] » [Ground]
Air Source Compressor Wiring Flow Chart (Circuit 3)
[12V DC Source] » [60A Inline Fuse] » [(Pin 30) Relay (Pin 87/87a)] » [(Red) 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 additional accessory line and wire it using an inline fuse (20A) to your pressure switch using the
large red wire (12V DC Source).
5. Connect the pressure switch to the relays using the large white wire (Load) from the pressure switch and
pin 86 of each relay.
6. Connect pin 85 of each relay to ground.
Circuit 3
1. Locate an accessory line capable of a 60A load and wire it to your heavy duty 60A fuse holder.
2. Connect your fuse holder to pin 30 on each relay.
3. Now wire each relay’s pin 87 (or 87a) to the load wire of its corresponding compressor (large red wire).
(Use one relay per compressor)
4. 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!