running lights on cars and trucks
We have driven the USA many, many times in good weather and bad, day and night. There is one thing that really bothers me while doing what I like ....rving. The thing is the lack of cars and trucks th...
Forum Discussion
DrewE wrote:mich800 wrote:slickest1 wrote:
All the vehicles I have had here in Canada have had DTRL's |They only come on half as bright as the low beam. The tail lights do not come on which I personally think they should be on as well.
My 2008 F250 was originally a export to Canada so it has the DRL. But at least for this one it is just the regular low beams that come on when the vehicle is put in gear. Not a lower powered light.
While I don't know about your specific truck, usually on vehicles where the headlight bulbs are used for DRLs it's the high beams that are used at reduced power/brightness (either by connecting a resistor in series or by having some sort of a PWM chopper circuit). Low beam headlights are designed with a horizontal cutoff above which little light is produced, so as to avoid getting light (glare) into the eyes of oncoming drivers. DRLs, of course, are intended primarily to have exactly the opposite effect: they need to be visible to oncoming drivers but don't need to illuminate the roadway.
Yes you are right on that. Our 07 trailblazer is that way and apparently the module can go bad and the brights come on full strength and you can't dim them. This happened to my wife one night. The GM dealer said that this does happen from time to time.
