I'm a type II diabetic.
Running is one of the very best things you can do for type II. The "running with diabetes" link that Mash posted above is definitely a good one.
There are a lot more details you could give, if you want, like how long you run for, what tablets or medication you are on, how your blood glucose normally is, whether you are overweight, how you test, what time of day you run, and so on.
I personally don't find I need to eat before running. I eat immediately afterwards, and for runs longer than say 90 mins, I use a sports drink or carb gel during running. In any case, I tend to carry glucose for emergencies, but never have to use it.
But depending on your diabetes and your medication, you may or may not need to take some carbs before running. The best thing is to experiment, and do plenty of blood testing before during and after until you feel you know what's going on.