Ok I cant figure this out every DIS module I get tests out bad from Auto Zone. I need to find a way to test these my self. I have gotten 3 from pep boys and 1 from Napa and i don't think all Four could be bad out of the box. The last one that I got from Pep boys I brought it to auto zone before I even put it in the car. So now I'm not sure if the tester at auto zone could be broken. If anyone has any info I would appreciate it
Thanks John
Thanks John