I did some searching. But never really seen a good answer.

I have PLViewer v2.05g

I think I have it right but just want to make sure before I go to the dyno
in an hour.

The instructions say to pull down Preferences and select wideband. There isn't
a wideband selection. There is Custom sensors and Analog 1 and 2.
I'm using the VarRes input, which would be Analog 2.
My wideband is the AEM. So I went to there site and put in there numbers
0v is 10.0A/F, and 4.99v is 19.98. It looks close. But Like I said just
wanted to make sure.

 

Looks right to me.