Hey guys, I have a couple of probably simple questions.. As you will notice I have uploaded a picture of DirtyDan's combustion cannon, i just have a few questions about it ! Ok so green 1, 2 & 3. 1. The valve to the 'propane' tank 2. The only reason I see the use for this valve is so that you can ho...

2 wires??

For some reason my computer wont pick up my camera so i cant post a picture of the cannon but i drew a quick ms-paint version of what it basically looks like

attached file

where it says
'spark?'

is where i want it to spark but its not sparking.

Sorry guys, looking at your lovely forum and seeing the types of cannons you guys make.. gives me one hell of a hard on :P But I'm an amateur and I apologise for wasting your time reading this and replying :P But i've nearly smashed my cannon into a million pieces as i cant figure this god-damn prob...