trying to wire up a 12s plug with a split charger, not a landrover one just one i bought of the shelf at a local motor factors. I need help with the connection that goes to an ignition live, as i understand the td5 alternator is not right for this, so i was thinking of picking it up from the wiper motor. Would this be ok or will the Gremlins in the ECU think its christmas and give me no end of grief.