Daytime running lamp (DRL) control system

A system comprising:

• a light source;
• a battery terminal operable for receiving power from a battery in a vehicle;
• and
• a light source controller coupled to said light source, and operable for monitoring a voltage of said battery to detect if an engine of said vehicle is starting up,
• wherein said light source controller comprises a controller operable for generating a first control signal to power on said light source if said engine is started, and that keeps outputting said first control signal if a holding signal is received by said controller within a first time period after said engine starts, wherein said first time period is a time period during which said controller is reset after said engine starts.

A method for controlling power to a light source in a vehicle, comprising:

• generating a trigger signal when an engine of said vehicle is starting up;
• generating a first control signal by a controller to power on said light source when said controller is triggered by said trigger signal;
• generating a holding signal after said engine is started and is running;
• and
• continuing to generate said first control signal by said controller to power on said light source if said holding signal is received by said controller within a first time period after said controller is triggered by said trigger signal, wherein said first time period is a time period during which said controller is reset after being triggered by said trigger signal.