|The Griffin iTrip is an FM transmitter which attaches to the iPhone dock connector, and draws its power from the iPhone itself.|
If the iTrip does not switch on its display when attached, and if the iTrip app cannot detect the iTrip hardware, this may occur if the iTrip app data is invalid or corrupt.
- Delete the iTrip app from the phone. Answer yes to confirm the deletion of the app's data.
- Sync the iPhone to iTunes.
- Use iTunes to re-enable the app, and sync the iPhone. The iTrip app will be reinstalled with default settings.