I doubt your distributor would like that very much. The output you have here hard connected to the +12V. Given that it switches to Earth it may well damage the module.
It seemed strange to me too but I am a mechanic instead of electrician and I'm still learning at the age of 50 
Firstly, with a Coil, it stores energy sorta like a capacitor, however on opening the charging supply, unless it has a moderate load, it will produce a high voltage spike of a few hundred volts. I doubt the LED would like that and it's likely why the LEDs are going to god.
Secondly, on the points or module opening and thus 'firing' the coil, the charge in it doesn't disappear right away but decays over time, only millisecond, but none the less, it's not instant. If the LED survives the initial spike, the coil discharge time will keep the LED illuminated, thus totally distorting the true dwell period as observed.
That is clear, it was my first thought too and this why I should use the machine without coil. Of course I can use that way with a strobe light but it was not the goal when I started the building 
I suggested a 2.0 Ohm Resistor as many coils for use with electronic modules seem to be 1.5 ohms and some at 0,8 ohms, (though I think some too are 3.0 ohms, so you may need to check here). Without getting too hung up on how such coils behave in an ignition circuit, from a testing perspective (with your machine) what's important is that you don't exceed the current that the module will withstand. With a 2.0 ohm resistor that's around 6 amps (and that's pretty much inline with a coil). Passing more current through it than it's rated for will usually damage the module. If it's rated for a 1.5 ohm coil, and you use a 2 ohm resistor on it, that will pass less than it's maximum rating and so will survive happily.
I see, it's clear too
Yes, light bulbs would be fine, and in all likelihood, even 21 watt or a couple of them could well be enough.
Somewhere in the beginning we discussed that a normal light bulb won't be fast enough in thsi application. The factory made machines used strobe bulbs or they modified them for LED's. I never saw a regular light bulb in any machine 
Your machine can handle electronic distributors ? I see on the manufacturer website that they produce adapters for electronic dizzys
123 ignition powerspark ignitor pertronix transistorzündung adapter adaptor elektronik electronic
Thanks all of you !
