Grote 44360 Automatic Override Switch with Timer
Reduces the overall number of components of the interior lighting system. Eliminates tapping into the air-brake delivery system. Automatic shut-down of circuit for no-fuss on / off. Driver can completely operate the system form the trailer if using with Grote's Momentary Ground Switch 44380. Allows for multiple, simple ground-sensing switches while maintaining the integrity of the interior lighting system. Timer can be set at 20, 40, 60, 90 minutes (factory preset is 40 minutes)