Does Deathtrap get my Shock Damage boosts?
The folks over at Wikia speculate that Wires Don't Talk? does add to Make It Sparkle.
If you set Deathtrap's element to Electrical through the use of Make it Sparkle, then Wires Don't Talk may also increase his damage.
However looking at the actual skill description for Wires Don't Talk.
Increases all Shock and Electrocute Damage that you inflict.
Shock and Electrocute Damage: +3% per skill rank.
It mentions you specifically, so that you lead me to surmise that it won't apply to anything else.
There doesn't seem to be much chatter on the Gearbox forums about these skills.