Hi Dario,
I looked at the photo on your web site and it appears that you've clipped the Black/Blue wire somewhere between the coil primary and the OEM cluster connector, and then inserted the R-C network. Is that a correct assessment?
If so, you've done it incorrectly. The fact that your bike refuses to start when you do this is possibly due to you shorting out the coil primary and starving the spark plugs of energy.
The correct way to do this given that you have a BEP 3.0 installed is as I illustrate below:
Please note that the R-C circuit has to be placed on the RPM output of the BEP. The values are difficult to see from the diagram; they are 33K Ohm resistor and 0.1 uF capacitor. I think your setup will work if you change it to be this way. The easiest repair is to clip off the capacitor from the Black/Blue wire and attach it to the RPM output of the BEP. Then repair the Black/Blue wire.
You have to think of the BEP as having two sides. The left side has the 24 pin connector to which you attach the OEM harness. The right side has a 24 pin pluggable socket. Think of the left side as being INPUTS and the right side as being OUTPUTS. The INPUT side accept power inputs, ground input, and signal inputs. The OUTPUT side strictly supplies the gauge and the dash indicator lights. You should not connect an input to the OUTPUT (right) side of the BEP. I hope that kind of makes sense.
