[tracker2] T2-135 profile switching question

[micalite]

Can someone confirm that the "jumper" referred to in the profile switching 
section of the configuration screen is actually pin 6 on the DB9 of the Alinco 
DR135T rear connector once the T2-135 is installed.
Is it appropriate to pull pin 6 to ground as part of the profile selection 
setup?
It appears to be so from the instruction manual of other tracker models, but 
the T2-135 manual is a little slim on this point.
Don't want to let the smoke out!  Thanks
Terry