No, these "Bell System" 42A Jacks came with the leads unbridled, meaning, they were loose. This was done so the installer did not have to deal with a cover getting in the way when installing.
The back mounting, with the screws, was mounted to the surface, the JKT or telephone cable attached to the appropriate screws and then the leads were connected. In some instances, the green and yellow leads were connected together to make the ringer work. In other, more rural areas, there might be a ground wire along with the tip and ring for different ringer connections and there were harmonic, synchromonic, and decimonic ringers used as well that, in some areas, required either a tip to yellow or ring to yellow connections.
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