The wireharness is all the cables routed throughout the car as well as all the connectors connecting the components. In this position you will need to have a strong and recurring communication with all the subteams as most subteams will either need cables or will have cables routed near them. You will also need to take EMI into account and design the harness accordingly as it can interfere with circuits and other systems. You are expected to design and plan the harness as the chassi and other system’s designs evolves, and realise the harness during the manufacturing period.