I would like to add led daytime running lights. They need to go on with key but off when headlights are on
I will provide you with a wiring diagram of how Ford has the daytime running lights in place.
Daytime Running Lamps (DRL)
NOTE: The smart junction box (SJB) must be configured when installing a new module. For additional information, refer to Section 418-01.
The DRL system operates the low-beam headlamps at a reduced intensity. The SJB supplies pulse width modulated (PWM) voltage to the low-beam headlamps when the following conditions are met:
- The high beam headlamps are not on.
- The ignition switch is in the RUN position.
- The parking brake control is released.
The DRL system utilizes the existing circuitry in the vehicle.