Hi Guys I have an MP3 trike with an additional air horn which goes off when I press the bikes horn button.
I would like to introduce a small delay in my air horn (143db) setup.
I have included a jpeg to show my current setup. As you can see from the existing headlamp relay, I have taken a grey wire to a new relay. This wire goes live only when the engine is running. From a new fuse box I am powering the new air horn. What I would like to do is delay the air horn going off for an adjustable 0-1.5 seconds, in this way the on board horn goes off when I press the button for a friendly meep meep, but when I need a BLATT by holding the button for about a second before the air horn kicks in. If possible be also able to flash the main head lamp as well. The screaming banshee (139db) air horn has such a unit, but this is about £50 plus import duty, if you can get one without the horn it self. The air horn draws about 20 Amps and the main beam is about 5 Amps. the 2 new relays have 40 Amp contacts.

 

Closing in 5, 4, 3, 2, ...

 

Hi Guys I have an MP3 trike with an additional air horn which goes off when I press the bikes horn button.
I would like to introduce a small delay in my air horn (143db) setup.
I have included a jpeg to show my current setup. As you can see from the existing headlamp relay, I have taken a grey wire to a new relay. This wire goes live only when the engine is running. From a new fuse box I am powering the new air horn. What I would like to do is delay the air horn going off for an adjustable 0-1.5 seconds, in this way the on board horn goes off when I press the button for a friendly meep meep, but when I need a BLATT by holding the button for about a second before the air horn kicks in. If possible be also able to flash the main head lamp as well. The screaming banshee (139db) air horn has such a unit, but this is about £50 plus import duty, if you can get one without the horn it self. The air horn draws about 20 Amps and the main beam is about 5 Amps. the 2 new relays have 40 Amp contacts.

I have just the thing for you. I have a small circuit board that once the power is applied a short delay that is preset, but can be changed with a resistor that will turn the air horn on after the delay. All you would have to do is connect the yellow wire to board, a ground to the board and a wire from the board to the pink yellow wire. I can assemble the board and put pigtail wires on it so you can connect it your system.
As a side note I used to build these for a customer that needed a similar delay when pushing a button in the car.
Please PM if interested.

 

I think I have sent you a PM

 

.... 3,2,1, still not closed?

 

The owners of All About Circuits have elected not to allow discussions of automotive electrical system modifications/enhancements due to safety concerns, the potential of legal ramifications and the possible circumvention of vehicle regulations at the state and federal level.

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