On your dashboard, you should have a switch Low/High sensitivity.
Your FM homing can only tell you if the beacon is on your left or right side so you need the OBS.
Center the needle and you should go to the beacon or not.
To be sure, turn slowly to the right.
If the needle go to the left, the beacon is front of you. If the needle go to the right, the beacon is on your six.
Sorry for my poor english.