As stated elsewhere - these worked fine on my Excursion and when I traded it in I pulled them and sold them to a mod here... who likes them as well....

but the F-250 versions did NOT work well...
tried them for 2 weeks, called the mfg and he said to try this...
that didn't help, so I wanted to return them and they wouldn't honor the 30 day return policy.....

So buyer beware.... just trying to help....