purpose of roof lights?
Why do 3/4 and above pickups have a row of lights on the roof, but not the 1/2 ton? What purpose do the lights serve, other than working-man's "bling"?
Forum Discussion
Any vehicle over 80" wide requires three identification lamps centered at the highest point at the front and rear. If the tow vehicle is under 80", it does not require the three lights when towing a wider trailer as long as the trailer is properly illuminated.
http://www.nhtsa.gov/cars/rules/standards/conspicuity/TBMpstr.html
http://www.nhtsa.gov/cars/rules/standards/conspicuity/TBMpstr.html
