If you ride through mud, water, or in less-than-optimal weather conditions, chances are that you’ll experience at least one electrical issue in your Polaris RZR 4 during your UTV tenure. However, there are things you can do to mitigate RZR 4 electrical issues. Dielectric grease, for instance, is a solid way to protect your electrical plugs, and painting all the connections works wonders as well. After you’ve painted everything, you can also throw on some Anti-Seize. Typically used in long-distance semi freighters by truckers, Anti Seize Grease is a proprietary assortment of graphite, aluminum, and copper lubricants that you can put on your battery to prevent corrosion, galling, and seizing.
Another option many riders use to safeguard the electrical system of their RZR 4 is to relocate components like the voltage regulator and fuse box. You can buy a relocation harness to move such components to the firewall behind the fan. The number three wire plugs directly into the RZR, while the red and yellow wires go to solenoid and ground on the regulator end. You shouldn't have to do any splicing with such relocation harnesses, without which the wiring becomes a pain in the a$$. You can also keep mud out of the regulator and fuse block by relocating them under or behind the rear seat. The only caveat is that there may not be enough ventilation and things tend to get hot. So if you choose to go this route, you can put a little computer fan or something similar on it to maintain airflow and keep things cool. Alternatively, moving your regulator to the middle/center inside between the seats is an option. But if you run snorkels and/or a bump seat, chances are that this space is already taken up. But regardless of what accessories you run, upgrading your RZR's electric system, tweaking the placement of electric components, and replacing electric parts that have gone bad are all ways to ensure the proper functionality of your RZR's electric system and the machine as a whole.