TST Corp.
The TST Underbody Service Lighting System provides a consistent-burning rear or side lighting source that is ready for installation on virtually any specialty commercial vehicle. The lighting assembly operates when the vehicle’s left or right turn signals and/or emergency flashers are being used, and when the marker lights are on – resulting in enhanced rear and side visibility that aids driving safety when the vehicle is stopped, in motion, cornering, braking, or backing up. Since the TST Underbody Service Lighting System is connected to the turn signal lamps and vehicle marker lights, no additional wiring is required unless more than four lamps are installed.

TST manufactures a variety of specialty electronic controls for numerous applications in automotive, light to heavy-duty trucking, bus, construction, off-highway, public safety, marine, utility, and emergency service related vehicles.