Run Short Wires
Weight and resistance come with the motor and battery wires in your vehicle, and you have to find the right balance of reduced weight and low resistance to make your power system and vehicle as efficient as possible. Thick wire has the least resistance but the most weight; thinner wire has more resistance, but its weight is much less. No matter what wire you use, make sure you get them as short as possible to cut down on resistance and weight. A great starting point for wiring a power system is 14 gauge.
The shorter you can get your wires, the better; they will lighten your vehicle and will have less resistance.