the switch post 28 by a force of approximately 5 lbs the wiring system 30 comprises several series of single wire connectors 40 such that portions of this wiring system can be threaded one connector at the time into a relatively small hole through the firewall of the vehicle or alongside existing conduits or cables extending outside the passenger compartment of the vehicle each light module 32 is made of coloured light emitting diodes leds 50 mounted side by side in a sealed housing 52 these diodes 50 are arranged in sets of three aligned behind a clear lens 54 each set of diodes 50 contains a red diode an amber diode and a green diode for convenience the word diodes and lights are used interchangeably herein to refer to the light emitting diodes 50 it will be understood from the following description that the red light indicates a braking condition the amber light indicates a coasting condition where the operator of the vehicle does not apply pressure on neither the brake pedal nor the accelerator pedal and the green light indicates an accelerating or constant speed condition where the accelerator pedal is depressed at least a small amount there are also provided on the housing 52 of each light module 32 a series of tabs 56 affixed to.