there's a better option now, I wish I'd known before I went with the aforementioned mod. THIS Hero port comes with a Zenmuse ribbon cable so you it just integrates straight in. much better.
http://www.goodluckbuy.com/dji-h3-3d-3- ... -part.html
http://www.goodluckbuy.com/dji-h3-3d-3- ... -part.html