I have a 2000 reflection 327. The only electronic connector that I am aware of is in the passenger rear basement storage locker. It connects to the engine and provides engine data. I don't know if it provides diagnosis info.
I found one in the fuse compartment in the basement below the driver window.
I can't find another one anywhere. I have a Freightliner chassis.
The Scan gauge II seems to work there.I pulled the cable from there up into the driver area.Thanks for the help all.