Wiring harness design in CATIA V5 - 3D modeling Week 4 Challenge
First we will create a sketch the route as shown above and after that we will create a new product and insert all the connector in that product
Before inserting the connector we will make sure sure that all connectors are electrically defined 
and after this sketch we will go to assembly design in that we will copy and paste the above sketch.
By double clicking on the product we will go to electric harness assembly and click on the icon shown below

and after multibranch definition, we will route the tubes,then we will cod tube by accessing through catalogue as shown below

we can move the cod tube extremity by giving 30 mm