Looking OK is not good enough.
Fuses need to be removed and checked with an ohm meter.
They can be bad and look good.

Glen

I had the wire go bad on my '91 Explorer from pushing the ash tray in and
out.

The Dash lights and the Tail lights share the same fuse. You should walk
around to the back of your van and check to see if the lights come on. It is
possible that the main light switch has failed on the dimmer control. Of
course, it's also possible that the dimmer control is set all of the way
down ...

The cigarette lighter is a different circuit. The cig lighter is a single
wire, with perhaps a short wire that connects to the frame to provide the
ground circuit. You can follow the wire from the center post of the lighter
to see where it is broken. You can follow the other wire (if there is one)
to a nearby screw to see if it is grounded well. Of course, the cig lighter
itself (the part you use to physically light your cigarettes) is a failure
item that burns out. You can buy a new one at an auto parts store -- I'd
suggest a visit to the large retailers where there are lots of accessory
items out on the main floor.