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Post Info TOPIC: DSM switch and air shifter


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DSM switch and air shifter


So I'm reading all the stuff on using the DSM switch for air shifter. I don't have a DSM switch anymore so I was just going to mount a push button to use. So I wired the switch to a ground and the pin on the Ecu. What do I connect the solenoid to? I was reading about the trouble with mounting it also to the switch but then I don't know where to wire it to. Can someone explain this to me?

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The point of the DMS switch is to ground the signal when you shift, not really to wire the button itself to be the action that activates the kill.

I have mine on a pressure switch. When the shifter line gets to a set pressure, teh switch grounds the DMS2 circuit in the ECU. This preloads teh shifter, then kills the engine.

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so the grounding it what activates the kill in the ECU. so how else are people hooking up the solenoid? i don't want to add a pressure switch and any extra bits and pieces. if i wire the solenoid directly to the switch, i was reading that might have problems in the higher gears. so how did people get around this?

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The way I have been wiring all the bikes I do is to use the stock horn wires, one is a 12v key on power and the other is a ground when the horn button is depressed, I run both wires down to my shift solenoid and I tie in a second wire to the ground wire and run it back to the ECU pin for the DSM button.

very simple and functional and if you still want a horn then just take the ground coming from the stock horn connector and run it to a 3 pole toggle first and then one goes to the horn and the other side will go to your solenoid and ECU.

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Two Wheel Werkz wrote:

The way I have been wiring all the bikes I do is to use the stock horn wires, one is a 12v key on power and the other is a ground when the horn button is depressed, I run both wires down to my shift solenoid and I tie in a second wire to the ground wire and run it back to the ECU pin for the DSM button.

very simple and functional and if you still want a horn then just take the ground coming from the stock horn connector and run it to a 3 pole toggle first and then one goes to the horn and the other side will go to your solenoid and ECU.


 

This will work, but you might want to put a diode across the shift solenoid coil. It may induce a voltage spike when you let off the bitton and the magnetic field collapses, sending a high voltage spike to the ECU input.

This may or may not happen and even if it does, it may not be an issue, but it may be a possibility. I know that sounds very ambiguous. I'm just throwing it out there.

 

John



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Ok thanks for the input.

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I think I'm reading this wrong but it sounds like the Ecu is always grounded? Ill try to draw up a picture so I can better understand. 12 volt power to button - button to solenoid - solenoid to ground. Where is the Ecu tying in?

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Two Wheel Werkz, can you explain a bit more on your set up? or email me at semilligan3@gmail.com

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I will try to draw up a wiring diagram in the next day or so and I will email it to you.

The horn on the bike gets 12+ when the key is on, when the horn button is pressed you get ground signal. I take the + wire from the horn and put 2 wires in a male spade, one wire going to stock horn, other wire going to shift solenoid. Take a ground wire from stock horn connector and run it to a 2 way 3 pole toggle switch. (center pole) then from one side of the switch back to the stock horn and other side of the switch to the shifter solenoid ground, then where you make the connection the shifter solenoid ground tie in another wire and this wire will go the the orange/red wire (DSM lower) at the ECU. One side of the switch will be horn mode the other side will be shifter mode.

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Ohh so the hot runs to the solenoid directly and the switch runs the ground. Got it. I was thinking the hot was going through the switch.

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