These series carts are notorious for one thing, and that is heat. Everything under the seat generates heat, and as things get older and wear down, the hotter they get. Take, for example, your forward and reverse switch. Let's say you upgraded your controller to a 500 amp, and the switch is now malfunctioning. Well, that's because it's copper, and the added power dray from the upgrades is making things heat up. All of this can be easily avoided with an EZGO Electric 600-Volt 4-Gauge Heavy-Duty Weld Cable Set. The standard wiring on the cart is six gauges which are honestly not effective on the stock components, let alone anything above and beyond that level of performance.The controller does a much better job of dissipating the heat and protecting the newer shunt systems. On a series golf cart, the controller relies on the other components to keep it cool to function correctly. This is why it is essential to make sure the small things get upgraded, like the EZGO switches and the cable set we have for you here at Buggies Unlimited today.