I popped the fuse panel out of its mounting tray and sprayed the bottom of it with battery terminal protector. Then I put it back, took all of the fuses and relays out, and sprayed the top with same battery terminal protector. 2 years with a few hardcore mudding events and almost 2 years of plowing and it still looks brand new.
Mine- 2011 Sportsman X2 550 With EPS!!-Mile Marker 2500lb Winch, Guru Brush Guard, 3000K HID's, PIAA Driving Lights, Autometer Phantom Oil Temperature, Coolant Temperature, and Voltmeter Gauges, Polaris Low Lock and Ride windshield, Acerbis Handguards, Symtec Heated Grips and Thumb warmer, 2+2 gallon Rotopax Fuel packs, Warn 60" Provantage Plow w/ Power Pivot
Hers- 2012 Sportsman 550XP EPS Blue Fire LE 27" ITP Mudlites on ITP SS212 Wheels, Polaris 2500 lb winch
Just Because- 2000 Magnum 325 2x4