Kill button

Hello!
I wonder if anyone knows how the killbutton is connected .On my 850cc the power to the ignition stops when i push it.
I whold like to connect my 750cc the same way(its not connected to day)I dont want to burn my digital electronic ignition.
Cant find anything in the wiring diagram.
Regards Anders from Sweden

Welcome to the fourm.

The kill switch is normally closed, when you push it the circuit opens stemimg the flow of electricity to the ignition system. The order of components would be battery, ignition switch, kill switch, ignition system. You didn't say what year or swtich gear you have on your 750 but any normally closed handlebar mountable kill switch will work if you don't have the Norton OE switch gear that incorporates the kill function. Either way identify the two wires that open and close with the push of the kill switch, put those wires between the ignition switch hot to the igntion system (typically energizes the coil(s)) and your kill switch is active. If you need to add wire use 14 or 16 gauge multi stranded stock, bullet connectors will simplify instalation, a bit of heat shrink on the back side of your crimps or solder connections will strengthen the joint and aid in providing a moisture shield.

RS

Hello and thanks for the reply!
I have a commando S 1970 with the WIPAC TRICON HANDLEBAR SWITCH and i think the red button(kill switch) only connects two earth(I think)when i push it.
I been told to shortcut the right coil where the wire from ignition is connected (-) but i think that will burn my electronic ignition.
Regards Anders

What kind of EI are you running? From a past thread it seems that many can be shorted (to earth) but the Tri Spark in particular says no!

Frankly, I think that if you put that switch between the battery and your ignition and short it to ground, you will blow a fuse so fast that your ignition module will think you turned off the key. But for some reason, I haven't been able to sell that idea much. It would be inconvenient if you used the kill button everytime to shut down, but if you only used it in emergency then probably not so big a hassle. I think that the real problem with shorting an ignition to ground is between the module and the coils. I am not an electrical engineer, but that is my take on it. Use the idea at your own risk.

Russ

Anders said:

Hello and thanks for the reply!
I have a commando S 1970 with the WIPAC TRICON HANDLEBAR SWITCH and i think the red button(kill switch) only connects two earth(I think)when i push it.
I been told to shortcut the right coil where the wire from ignition is connected (-) but i think that will burn my electronic ignition.
Regards Anders

Click to expand...

You should have a Wipac Triconsul switch with the GREEN and black button, not a Tricon with the RED and black. The '68-'70 Commando did not have a kill button. The Green button was a high beam flash while the black was the horn. The RED button on the Tricon is indeed a push-to-ground button where a Commanod needs a normally closed kill switch. You could get clever and use the red button to activate a normally closed relay. You can also take the Tricon switch apart and modify the contacts and wiring to make either a Hi-beam flash (as a Triconsul) or a push-to-open

Hello!
Thanks a lot for the help!I think i am going with the closed relay.
Regards Anders

Anders, Ron L's advice to use a relay is spot on. I use them on all of my Commando rebuilds. The original angular alloy controls with open circuit kill switch to break the feed to the ignition is prone to high resistance and you can get very low voltage to the ignition even when it is closed. Using it to control a relay means that you can get the full voltage from the battery to the ignition.