The electrical system on the experimental set-up is that of a Golf 5 from model year 2006. The components and all connections are genuine Volkswagen components. Access to the CAN BUS and LIN BUS is made possible by a function box. It contains interfaces for diagnostic equipment commonly found in garages, for the connection of components and expansion with components, and for CAN BUS and LIN BUS dongles. All signals on the parallel interfaces to lights and headlights can be tapped.

All work for troubleshooting, diagnostics or measurement exercises can be undertaken on both sides of the model panel. There is a lockable fault switch box with 14 faults on the rear.

Consisting of:

Power supply cable, 4 parallel interfaces to the lights and headlights fitted, vehicle electrical system control unit, number plate lights, additional brake light, double washer pump, windscreen wiper motor, gateway, 2 earth distribution boxes, CAN function box with interfaces and OBD connection, fuse panel, original wiring harness, fault switch box with 14 faults

The power is supplied using a normal 12V vehicle battery or a voltage-stabilised switched mode power supply (not included)

Additional box with additional basic circuit module

The module is fastened to the frame using slot nuts. 2 laboratory cables for the supply of power are pre-installed on the additional basic circuit module. Power is supplied via the CAN function box.

Included in the scope of delivery are:

• Various laboratory cables so that the basic circuit can be fully connected
• Laboratory cable with integrated 10 Ohm resistor for the simulation of voltage drops on the positive or negative side of the load
• Laboratory cable with fuse for measurement of the voltage drop at a fuse. (Measurement of hidden loads)
• Power relay with laboratory cables for the simulation of a relay circuit with switch and load
• Fault switch box for right rear light

Faults that can be switched in the lighting fault box:

• Contact resistances
• Short-circuit to earth
• Open-circuit

With the open-circuit switched, the current to the rear light can be checked at the measuring sockets on the box.

Possible applications for the additional box:

• Ohm's law
• Current, voltage, resistance
• Resistance of a lamp cold and hot (PTC)
• Inrush current of a PTC load
• Voltage drop on positive side
• Voltage drop on negative side
• Voltage drop measurement at a fuse
• Hidden loads
• Complete relay circuit