Hi ab469,
I just did that on my simpit aircraft. Hey... it's MY aircraft.. I can install "aftermarket" equipment. ;) Works like a charm.
You can add most any guage to most any aircraft if you know how to do that panel work. In my case I am turning real knobs on the simpit panel... but it would work the same for a "normal" sim aircraft too. I needed the guage to be on a panel that was not showing anywhere... because for simpit use the "real" physical panels take the place of the simulated panels.
For personal use
only, "steal" the autobrake file from another aircraft that has it. The file name should be somewhat obvious. (You can't distribute the panel with "lifted" guage files in it unless you get permission from the original programmer.)
If you can find space on an existing panel... you can just install it there. Lacking lacking room on a panel, all you have to do is create a new small blank panel and install the autobrake guage into it. Set it to be hiddin until you pop it up.
Doing this stuff will involve changing the aircraft's panel.cfg file. Are you comfortable with doing that sort of stuff? Maybe drop down to the Scenery and Panel design section and check out a few past threads. You'll find
my questiona about this somewhere too.

best,
.................john

Intel i7 960 quad 3.2G LGA 1366, Asus P6X58D Premium, 750W Corsair, 6 gig 1600 DDR3, Spinpoint 1TB 720