i am working on a bentley continental gt 2006 model, wipers not working and fault for fuel pump relay j17.i have fixed both problems open circuit in power wire to wiper motor i just ran a seperate wire to the motor from the fuse box in the plenum chamber and also open circuit in fuel pump relay j17 wiring from engine ecu 1 to onboard power supply ecu i also ran a seperate wire for this fault also. both wiring faults are in the wiring harness in the plenum chamber do bentley continentals suffer from wiring problems in the plenum chamber wiring harness and if so were do they normally break?