GR translation: A good pair, wired front-to-front

[Mike Jing]

V613.11-24, P624.4-16  It seems Beláustegui has been watching her more
closely since they got here. She doesn’t want to threaten his project.
She’s been to bed with the solemn engineer a few times (though at
first, back in B A., she’d have sworn to you she couldn’t have drunk
him even with a silver straw), and she knows he’s a gambler too. A
good pair, wired front-to-front: she picked it up the first time he
touched her. The man knows his odds, the shapes of risk are intimate
to him as loved bodies. Each moment has its value, its probable
success against other moments in other hands, and the shuffle for him
is always moment-to-moment. He can’t afford to remember other
permutations, might-have-beens—only what’s present, dealt him by
something he calls Chance and Graciela calls God. He will stake
everything on this anarchist experiment, and if he loses, he’ll go on
to something else. But he won’t hold back.

What does "wired front-to-front" imply here?
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