Rubi reverse override switch...possible or not????

I read on another forum about putting a reverse override switch on a rincon.

Here is the link:

<a href="http://www.atvfrontier.com/Knowledge_Ba" target="_blank">http://www.atvfrontier.com/Knowledge_Ba ... id=43.html</a>

Do you know what this blue on black wire that he is talking about goes to??

And if so, would this same wire be on an 06 rubicon??

Do you know if this same procedure can be done to a rubicon??

Thanks for your help.

Blessings,

TRHOD