Car dome interior light delay switch timer 1-25s 1A 12V negative switching

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User Guide: Dome Light Delay Module for Older Cars

This module is designed to replicate the modern car feature where the interior dome light stays on for 1-25 seconds after the door is closed. It is ideal for older cars that lack this functionality.

Features:

• Automatic Light Control:
  When the door opens, the light switches on. After the door closes, the light remains on for the set delay (1-25 seconds) before turning off.
• Compatible Lighting:
  Can be used with both LED and incandescent lights up to 1A (12 watts).
• Negative Door Switching:
  Only works with cars that have a negative door switching signal. Please refer to the wiring diagram.
• LED Indicator:
  Displays the operation status.
• Maximum Load:
  Controls lights up to 12V/1A. Load can be extended to 1.5A with a heat sink.
• Power Supply:
  12V DC with reverse supply voltage protection.
• Adjustable Time Delay:
  Set the delay from 1 to 25 seconds using the 100K trimmer. Rotate clockwise to increase the time.

Wiring Instructions:

1. Identify the Dome Light Wiring:

   • In the dome light assembly, locate the three connectors:
     • One goes to the ground.
     • One connects to the battery directly.
     • The third is connected to the door switches (which are parallel and directly grounded).

2. Cut the Door Switch Wire:

   • Cut the wire going to the door switches and proceed with the following connections.

3. Wiring the Module:

   • Red Wire: Connect to positive (+).
   • Black Wire: Connect to negative (-).
   • Blue Wire: Connect to the door switch terminal of the dome light.
   • White Wire: Connect to the cut door switch wire.

4. Safety Precaution:
   Connect the red wire via a 3A fuse for added protection.

Operation:

• Power Cycle:
  When first connected, the module will run through a cycle without activation. After this initial cycle, the module is ready to use.
• Normal Use:
  When a door is opened, the dome light will turn on. After the door is closed, the light will stay on for the preset delay and then turn off automatically.

Additional Notes:

• Ensure correct wiring for proper operation.
• For cars with more than 1A lighting loads, a heat sink or external relay may be required to avoid overheating.

This Dome Light Delay Module enhances the comfort and convenience of older vehicles, providing a modern lighting experience.