I did changed the cable before a couple of time...
i did modified my motor to be earth isolated ( i did fried a couple of JRK because of that...

)
I am using the new JRK plugin
My power supply seems to be good ( i will use an oscilloscope tonight)
Even with that i had the issue
BUT:
Looks like i found a part of my problem. I played yesterday for 2 hours without any issues. All i did was to recable everything and making sure no power line ,etheir the 120V or the 15v (yes my wiper motors are running on 15v ) are near each others. Before i had my 15 v to my left moter tie wrapped to the 120v line to the psu. I think the induction was too high and causing some kind of current going back to the JRK. I moved my sim to do the rewiring and now i get some weird thing with my g27 and my CSP.I see them under Looks like my usb cable may cross other power line.

Anybody can tell me if their simulator frame is grounded ? Still don't know if it is a good idea, not so much because of the motor but becaus of all the usb thing that is touching the frame.
So It turns out that everybody should make sure their wiring is clean and well placed, not like mine used to be...
