How do you know if there is any charge in the battery? Maybe it's dead. Do you own a multimeter or a test probe?
Is there a fuse in the wiring? Perhaps it's blown or corroded. These are the two most obvious places to look base upon your post.
Try using jumper/booster cables to your vehicle and see if it will spin over. If you can locate a wiring diagram in a manual, then that will help you isolate the issue.