I've got a question for you guys. In the tail section, is there a small ecu box back there? I know the 600's have one. Also if you could give me the part number off of it. I'm working on a 2000 750 and the stv actuator is not getting power. I replaced the big ecu ( the one with two plugs) and no fix p/n 32920-35f30. There is a second one in the tail with one plug. It has ecu140a on it. Wondering if this little ecu is the problem.