Take the positive wire (probably red, or has some red stripe on it)strip an inch or two of the wire covering off so the wire is expsoed and wrap it around one of your fuses (the bottom metal portion, not the plastic top part). I did this for my indiglo gauges and they work fine. I wrapped my gauges to my parking light fuse if I remember correctly. I didn't want to tap/splice into other wires and this was the easiest way to do so. Just make sure you've got good contact with the metal foot parts of the fuse and it should work. Also if there's another pure black wire, which is your ground wire you've got to secure it to a metal frame in your car. Look right above your pedals under the steering wheel, there's plenty of metal to ground it to up there.