Somebody also recalls cable assembly when mentioning wire harness, but, to be precise, they are not completely the same. Although both cables and harnesses are used for power transmission, there are obvious differences in application, structure, and appearance. For example, the cable also has a fixed size and construction, while the harness allows flexibly configured based on special requirements. Moreover, cables typically have only one connector, and harnesses have multiple connectors.

When we want to assemble wire harness, we can get started from wire harness design.

First, ensure circuit safety by proper arrangement towards the fuse. A fuse can not only protect one circuit but also others. What should be noticed is that only circuits with the same quality can share one fuse and that it is improper to share one fuse between inductive-loading and resistive-loading circuits. Additionally, the fuse in the electronic unit circuit should not be engaging in other circuits at the same time. Last but not least, we advise that actuators or sensors controlled by one electronic unit do not share the same fuse of common circuit.

Second, when we design wire harness assembly, try to keep the wire short, instead of detouring, to the battery.