I just put aftermarket Daytime Running Lights on my truck, but I couldn't find the lower output unit like I wanted to save bulb life. Is there a way to convert this kit so the lights only come on at 80% intensity until I actually turn the headlight switch on? Is it as easy as wiring in a resistor?

 

Hi Chelly

Sorry, cant answer your specific question.
Was looking at my wiring diag. trying to help out another trucker, when i saw your post.

Ford uses a "DRL Module" thats wired inline with the headlight circuit. Probably available thru parts dealer, or perhaps someone thats got that know how to make it?

Good luck. OT

 

Chelly:
There is a considerable amount of info on DRL at ...
https://www.f150online.com/f150board...ML/000274.html
BOL

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2001 F-150 Super Crew Lariat 4x4
5.4 engine; Chestnut w/ gold trim; Captain's Chairs; Ford/ Duraliner bed insert; Access Roll-up bed cover; Six disc CD changer in '98/'99 Expedition center console; Fosgate FNP1614 component speakers (front); Pioneer TS-A6855 speakers (rear); 8 inch MTX subwoofer in custom built, center console, sealed enclosure; Zapco AG150 amplifier; DRL daytime running lights with Fog Lights (Mod)available at all times;
Bel 980 Radar detector; Moon roof; Bed extender; Class 3 trailer hitch