G'day Mate and welcome to TBN from Downunder.
If your 'fuse panel' is anything like my 4105's have you tried swapping around the relays that are also on that panel. On mine all of the relays are the 'same', just plugged into different positions. Relays are indicated with a "K", as in 'K1', 'K2', etc...
Your local JD dealership's Parts/Service department will (should), free of charge, provide you with a schematic drawing of the circuit.
Enjoy the site and let us know how you make out.