System Description

Daytime Running Lamps System - F-Super Duty, Excursion (Part 1):

Daytime Running Lamps System - F-Super Duty, Excursion (Part 2):

Daytime Running Lamps System - F-Super Duty, Excursion

Daytime Running Lamps - Motorhome:

Daytime Running Lamps - Motorhome


The Daytime Running Lamp (DRL) system operates the headlamps at a reduced intensity due to the DRL resistor when the following conditions are met:
^ The high beam headlamps are disabled.
^ The ignition switch is in the RUN position.
^ The headlamp switch is in the OFF position.