Assuming you want to hook up a vibrator that does not come with a 3.5mm plug, there are a few ways to attach a plug.
If you are not handy with soldering wires, you can purchase a 3.5mm plug like this one and attach it to the Vibrator wires after cutting off the battery/control box. Screw the wires to the LEFT and GND posts.
Another option, is to purchase this eStim cable from current Pleasures either attach your Vibrator wires to the gator clips, or cut off the clips and use the wires splicers that we supply to join the Vibrators wires to the eStim wires.
If you can solder, we suggest soldering a 3.5mm plug directly to the Vibrator wires.