No the DRLs come on when the vehicle is in drive during the day with the park brake off,
There are several configurations of this so I have to know exactly what you have,
You can have the base package without DRLs and it may have Quad or dual headlights. Let me know whaich of these fit your truck.
You can have DRLs that come on during the day with the headlight turned off. They activate when the park brake is off and the transmission is in drive.
You can have the mac daddy package that has DRLs and automatic lights that turn on when it gets dark.
Let me know as there are four different wiring diagrams and this is hard enough.
The parking/marker/running/tail lights are seperate from the headlamps.
The headlamp switch is on the instrument panel so you are asking about the dimmer switch on the multifunction switch on the steering column and I read that this is where the broken blue wire is?
Let me know the answer to ALL these questions please