I don't have a 97 FSM handy to check the schematics. PM Echo or Sonoma. I know both of them do.
Yes, there is a relay, and it'* very likely above the passenger side hushpanel attached to the a-pillar (above your RF passenger footwell).
It MAY have a legend when you get in there to show which is which. Or it may simply be marked with a relay letter designation.
With the parking lamps on, you should be able to toggle the switch and feel one of those relays clicking if it works, but you'll need the specific relay location if it'* bad.