I've had the blue wire grounded for almost a year now, first mod. Today I checked it for continuity and it's still good so I went ahead and also grounded out the green/orange wire so that I could rule out my flakey speed sensor and not have to get down to 5mph anymore after the issue is resolved.
When applying power to the 6 pin connector, what do you use for ground? I'd try it right now but I'm on my way to sleep, work in 4hrs!