Vehicle lamp inspection system

A vehicle comprising:

• a controller area network;
• an electrical system controller electrically coupled to the controller area network and including a plurality of energization output ports which may be selectively energized;
• a gauge controller connected to the controller area network for providing data to the electrical system controller over the controller area network;
• an ignition switch position sensing element providing an input to the gauge controller;
• cruise control input switches connected to the electrical system controller;
• a horn input switch connected to the electrical system controller;
• a plurality of exterior lights connected to the energization output ports of the electrical system controller;
• the electrical system controller further including a programmable microcomputer for switching on and off each of the plurality of energization output ports;
• a test program executable on the programmable microcomputer resulting in the sequential activation and deactivation of subsets of the energization output ports connected to lights;
• and
• a predetermined combination of ignition switch position and sequence of cruise control input switches and horn input switches for triggering execution of the test program.