Try under the driver's seat next to the charger.pull open the flap on the front of the driver's seat base to access them if the box is not mounted on the outside of the seat base. www.tribby.co.uk/forum has a lot of helpful info on Tribute 650 and other Tribute models
Hello ron54 I just did a search on The Tribby forum and it looks like it's the flap on the rear of the driver's seat base which needs opening to access the fuse board.
I would use the contact us button top left on www.tribby.co.uk home page to explain you have tried to join the forum but had no reply. Jeff who runs the site gets a lot of spam attacks so vets each email address for new members. Sounds like yours application may have got lost in the process. It,s a great forum (as is this one) and well worth joining