Installing your Transponder 1. Position your transponder on the windshield behind the rearview mirror, 2” to 4” below the upper edge of the windshield. 2. If the windshield is divided, the transponder should be placed at least 2” away from the windshield separation line 3. Clean the surface with the provided alcohol pad and let it dry for a few minutes. 4. Remove protective liner to expose adhesive tape. 5. Affix the Transponder onto the windshield.