Trouble locating tach wire-Help!!

[GreenSpeed]

I have been following the different tach intall guides to locate the greenish-blue wire in Pin 15 of the Data Link Connector (OBD2) directly below the fusebox. The problem is that the furthest left wire in my OBD2 plug is a light orange wire and nothing actually appears to be in the Pin 15 area.

There is a light greenish blue wire that is in the middle area of the plug and I actually connected my tach to that, but got no reading.

Would it have something to do with my Yaris not being pre-wired for a tach?

Thanks for your help!

[Altitude]

The light orange wire is correct for the 08 LB. See below.

[GreenSpeed]

Thanks so much!!!