This circuit activates the horn if the door is opened with the headlights on. The circuit is for cars with 12 V power supply and the transistors can be BD136 for T1 and TIP31 for T2. The diodes are 1N4004. The circuit is from a 1978 publication.
Lights On Reminder (CB12637E)
- Details
- Written by: Newton C. Braga
