There are basically two types of wiring harness: modular wiring harnesses are assembled and pre-produced corresponding to fixed equipment packages. Forty varieties with differing levels of complexity are available to cover the entire spectrum of equipment, from minimum to maximum, with which a vehicle is fitted and, based on this, an appropriate modular wiring harness is installed for the scope of equipment. 

In contrast, the tailor-made wiring harness is made entirely according to customer specifications. Only connections necessary for the required vehicle configuration are built. In a car like the BMW 1 Series, this means approximately 50 million different configurations are possible. This approach reduces weight and costs while increasing the logistical complexity of production. A large benefit of this model: changes in the vehicle’s equipment can be made up to 5 days before installation starts with no delay in delivery. 

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