If you’re running a monster of a servo that is hi-volt and/or hi-torque, you’ll probably run I to a situation where your receiver or any additional electronics may not be able to handle the higher voltage being fed into your receiver. In the case of vehicles like the Axial Capra, your shift servo may not handle the same voltage as your steering servo. This harness feeds power directly to your servo, bypassing the receiver. This way you can run let’s say 8v to your steering servo, and still not exceed the 6v max limit on micro servos for dig and 2-speeds. Each plug is clearly labeled for simple straightforward installation, and covered with protective woven loom for durability.