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TDR Application 5: Auto Headlight Turn-Off

Make your headlights stay on for 30 seconds after turning off your vehicle

Status: Units are built to order - Please expect up to 2-week delay after receipt of order until order is shipped


On many newer cars, the headlights stay on for a short period after the vehicle is turned off, to allow the driver to see his or her front door or for other convenience purposes. You can add this feature to your car with the WolstenTech Time-Delay Relay.

Simply connect one or two TDRs to your headlights, and connect the trigger input to your headlight switch as shown in the diagrams below. As headlights are high-current devices, make sure you don't exceed the 10A maximum for the TDR. This usually corresponds to two headlight bulbs per TDR.


Example 1: Auto Headlight Turn-Off with Single TDR-P

Single TDR-P Diagram


Example 2: Auto Headlight Turn-Off with Dual TDR-Ps

Dual TDR-P Diagram



Item Added!
Positive-Switching Time-Delay Relay (TDR-P)
Price: $32
Item Added!
Negative-Switching Time-Delay Relay (TDR)
Price: $32