Ok so I can start my car when I hook a wire from the starter to the battery but it wont start from the ignition/key. I checked all the fuses and they are all good. What should I do next and have any of you had this problem? .My friend told me I should follow the starter wire that goes from the ignition to the starter. I found a wiring diagram but I dont understand it. If anyone could help that would be awsome.

thanks
matt