I used some dual color cannons with a whelen cencom core. When trying to use fast flash pattern, the light head was almost randomly switching the color and just not could keep up .
On slow pattern it is fine and can be syncronized
They go under the radiator support that extend to the fender on both side.
One would go under the air box and the other one under the battery . In both case it is easily accessible from under the car without having to remove the the fender liners .
I have the install sheet on a crown vic in my...
The DRL are mandatory in canada so I would start at looking at the wiring that was install during it's police use. It could be part of a black out module that wasnt plug back .
les drl sont obligatoire au canada alors je commencerais par regarder les fils qui ont été utilisé lors...