I think you misunderstood my question. But, I think you answered at least part of it.
There is a 9 pin port that I assumed was the engine diagnostics. The confusion must have come from my statement about the silverleaf options. They ask to specify a 9 or 6 pin port when you order the unit. I do not have one, or have it hooked up to anything. I'm just trying to identify what is in there. I have a 9 pin, and a 6 pin port. But, I also have an on/off toggle switch as well.