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Only other thing is to make sure you get a charger with it. Mine didn't come with one, and running a constant 12 volts to the battery will kill it fast.
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I believe Tekonsha has a special setup that wires directly into your brake controller harness that automatically charges your breakaway battery while you drive. Keep in mind that during long periods of non-use(like during the winter), you should be charging your battery from time to time.
On a TT there's no need to worry because the breakaway switch is wired into the deep-cycle battery, which is(hopefully) gonna be charged up before you leave.