Originally posted by aperson i meant STEERING motor not the RS4 motor, forget its even there. take apart the car and see if one of the wires is unsoldered from the STEERING motor fets, if it is try re soldering it. leave the electronics out of the car and see if the one you resoldered can be pulled out of the solder. if that happens you fried one of the STEERING fets.
Do you have the 2 capacitors on the RS4 motor you added?
everything was hooked up to the FETs. here is my motor