John, I'll email you back just now with some pictures I have of connectors in the circuit to try, @socks, on the EWD I have for a uk spec ep91 rhd the front wiper motor earths through pin 1 on the wiper motor connector and then to the intake manifold with a White and black wire. The rear wiper motor earths itself through the bolts/body Don't see why they would change it all for jdm spec, but as I say I don't have a jdm EWD Gary