Installing rain and lightsensors correctly is critical for them to work properly. Air bubbles or contaminants, such as dust between the adhesive and the glass can cause them to malfunction and must be avoided. Windshield manufactures utilize special heating devices and vacuum systems for their application processes. By following the procedures outlined below, correct application is possible.

Use a 50/50 mix of isopropyl alcohol and water to clean glass surface. Apply the 3M Primer 94 to the glass just before applying sensor. 3M Primer 94 is supplied with all GGG sensors and pads.

All GGG sensors come with the adhesive pad pre-applied. If you need to change a pad on a sensor we suggest using one of our sensor removal tools (GTOOL301, GTOOL302 or GTOOL303) to take the original sensor off the glass without damaging it. Heat the old adhesive to remove it from the old sensor. After cleaning, prime the sensor with the 3M Primer 94 enclosed capsule. Apply the adhesive pad in the same manner we suggest applying the sensor to glass (below).

It is best to apply the sensor to the windshield if the surface of the adhesive is heated (after lining is removed). It should be noted that the pad carries a slight electrostatic charge which will attract dust. Therefore using hot air from a heating gun is not recommended. The best method is to use radiant heat, like the heat generated by a lamp. Once the surface of the adhesive is heated apply the sensor using a rolling motion while applying pressure. The goal is to push out all air bubbles.