My guess is that it is a 2003 Holiday Rambler Traveler 30' PBS. Looks to be much like the Safari Trek, and appears that HR made them under the Traveler name for just that one year. Found some info here -
HR Product Archive Page
Unfortunately, that is as far as my smarts go
My friends have a Trek that is parked a couple of sites over, but they have no slide. On my rig, all of the relays and such are in the front, driver side compartment. However, on a front gas, I am sure there is no front compartment there. Other than the main electrical panel, there must be some other location for relays and solenoids and other fun things like that.
Would have been nice if tech support gave you even a general location to look
If you can't find someone here, I would suggest trying the rv.net Class A forum. Somewhere there may know something about these.
Good luck -
kev