I have a Gecko 540 Controller with Huanyang HY02D223B VFD. I have all the wires for it and my VFD hooked up except 2. The document for the Gecko has ports 7,8, and 9 for the VFD. 9 is easy enough, 10v to 10v on VFD. I am not sure where to hook 7 and 8 on the VFD. ((I am seriously horrible at electronics)) Any help is greatly apprciated.