theoretically can i hook up like a couple of double A's to a spark plug and a switch to get it working. if not, what would i need to do, to get a spark plug working

lol nop wont work

you need a coil

lol nop wont work

you need a coil


yep, one that takes 12v to around 60000v or a factory one lol

Don't just permanently hookup the coil direct to 12V DC either... :badgrin:
The coil will start smoking!

Coil is just a transformer, you get your spark only when the voltage is switched on/off.
This is done by the electronic ignition... in the old days there was a mechanical crank-driven
"contact breaker" that did the switching and a condensor (capacitor) that stored
the little bit of energy the spark needs to jump.


Umm... yeah everything runs at 60-100,000V.

Better not play with HT electricity unless you know what you're doing. :doubt:

I smell a prank in the making... lol correct Lenny? Or are we trying to make home made exhaust flamethrowers lol.

I grabbed hold of an un-earthed engine head earth yesterday while doing a ECU install.. It belted me 10-12 times with the full 60,000v of split-fire goodness in about 2 seconds because I couldn't let go. :doubt:



Needless to say, I feel sorry for whoever you're going to touch up with this prank lol

OK I'm not going into a long winded waffle about back EMF and the like so to the techs out there..........tell someone who cares..:P

The basic principle of a coil is this:-

They take a coil of wire, join one end of it to a second wire which is wrapped around the first using ****loads more turns than the first.

When you put 12V on the junction of the first and second coil and earth on the other end of the first, a magnetic field is generated around it.

When the current is removed (via the points etc) that magnetic field collapses down thru the second coil causing a very large voltage (at low current levels) to be generated.

That voltage is sufficient to jump the gap of the plug, which is at the other end of the second coil....ta da....spark

I smell a prank in the making... lol correct Lenny? Or are we trying to make home made exhaust flamethrowers lol.


no:doubt: never, would i do something like that...........