Check the fuses under the hood. If those are good, the clockspring is the likely cause of the horn and cruise failing together; if the van was bought new and the clockspring was never replaced, contact the dealer about a possible free recall replacement.
The owner of a 1998 Dodge Grand Caravan says the horn and cruise control failed at the same time after known fuses and relays were checked. One expert asks whether the under-hood fuses were checked. Another suggests the clockspring, notes a possible recall that may cover free replacement for an original owner, and is surprised the airbag light is not on.
