mo FAQ 4.2 – Which pin in the connector is pin 1, the wide one or the narrow one?
You need to look very close at the connector, the pins are labels. To avoid confusion we talk about pin 1 and 2 not wide and narrow. The wide connector on one goes to the left track and the wide connector on the other goes to the right track. We have found if we use connector 1 and connector 2, instead of wide and narrow, there are fewer errors.