Thanks for the link.  I had already discovered it.  It doesn't seem to
apply to the F250 model that I have.  

I forgot to mention in my ordinal post that this a diesel engine (if
that makes any difference.)

There was a copy of the options installed that indicates the DRL were
an installed option, but they are not working.

I can't find the resistor near the bumper and the dash top is totally
different and doesn't seem to come off very easy.

Mine has a couple of 'bins' on the top side of the dash.  I was able
to look up under a portion of the dash by dropping the glove box down.

Thanks again.