Trailer light tester

A self-contained device for testing the functionality of a trailer lighting system comprising:

• a fault detection logic means which identifies the existence of a fault, the location of the fault and the type of fault and indicates identified faults solely through left side, right side and tail light location fault indicator lights;
• a light mode control means which enables the user to manually or automatically cycle through multiple light modes;
• a rechargeable power source of sufficient capacity to power all functionality over a sustained period of time to eliminate the need for the presence of a towing vehicle or external power source;
• and
• a connection port operable to receive a trailer lighting system wiring harness.

A self-contained portable device for testing the functionality of a trailer lighting system comprising:

• a connection port for receiving a trailer lighting system wiring harness;
• an internal rechargeable power source;
• a manually actuated light mode selector button;
• a light mode control means for enabling the device to actuate a left turn signal, right turn signal, brake lights, and tail lights light mode individually, wherein said light mode control means actuates the brake lights mode by simultaneously actuating the left turn signal and the right turn signal modes, or to cycle automatically through the multiple light modes at a predetermined time interval;
• a main fault indicator light;
• location fault indicator lights;
• and
• a fault detection logic means for identifying and indicating the existence of a fault, the location of the fault, and what type of fault is detected, if any.

A device for testing the functionality of a trailer lighting system comprising:

• a light mode control means comprising a microcontroller which is programmed to actuate discrete lights, including the left turn signal, the right turn signal, the brake lights, the tail lights, and to cycle automatically through at least two of said discrete lights by actuating them at a predetermined time interval based upon a user specified the mode to test the functionality of each trailer light;
• a fault detection logic means comprising a microcontroller which is programmed to activate a main fault indicator light and one of three location fault indicator lights for the left side, the right side and the tail lights upon a fault being discovered within the trailing lighting system;
• a power source;
• and
• a connection port for receiving a trailer lighting system wiring harness.