
How machines are converted to ISOBUS control.
Each example shows a finished install: what was wired and what the buttons do.

A hook-lift trailer carries a long list of solenoids: the hook arm, the container locks, the rear door, the lift axle, the lights, and whatever the body on it needs. One 32-channel module on the chassis covers all of them from the tractor screen and the joystick, with more than half the module still free.
Built byTramline Tec
13 outputs · 19 spare · 1× 32-channel

Amazone Pantera sprayer turned harvesting machine, fitted by Adour Motoculture. Header and spout run from the AmaTron 4 and AUX-N joystick.
Built byAdour Motoculture
Custom build

Robert N. in the UK put his potato trailers on ISOBUS: the switch box carried into the cab replaced by an 8-channel ISOBUS Block on the trailer. Sheet and walkway from the tractor's buttons.
Built by the customer
Retrofitting

A Fendt 724 gained eight programmable relay outputs it didn't have from the factory, wired and named like any other AUX-N function on the terminal. Six of them land on a new 15-pin ISO 12098 socket at the rear, so any implement wired to match can plug in and get working controls straight away. The other two stay in the cab, and each implement gets its own preset, so swapping to the next one is a preset change on the terminal, not a rewire.
8 outputs · 1× 8-channel

Two outputs raise and lower the conveyor head. A flap sensor on one input raises it for you as the heap builds, on a button you arm from the armrest. Six channels spare and seven inputs still free.
2 outputs · 6 spare · 1× 8-channel · 1 sensor

A Claas Disco butterfly combination on the back of the tractor. Each unit lifts and lowers on its own double-acting valve, so four solenoids run off four relay outputs and four channels stay free.
4 outputs · 4 spare · 1× 8-channel

A tractor-mounted fork stacker with a three-section directional valve: lift, tilt and fork spread. Six double-acting solenoids, one 8-channel module, and nothing changes on the valve block.
6 outputs · 2 spare · 1× 8-channel

A Pöttinger forage wagon with no ISOBUS of its own. Eight outputs cover the pickup, the boom, the rear door, the conveyor floor and the buzzer. Two sensors on the digital inputs take the floor over while you load and unload, on one button you arm from the armrest.
8 outputs · 1× 8-channel · 2 sensors
A channel switches any 12 V or 24 V ON/OFF load up to 10 A. These are the ones people wire most.

Front loader third function, diverter valves, implement valve blocks. Anything with a 12V ON/OFF solenoid coil.

Extra work lights, boom lights, cab lights. Switch them from the joystick. No new harness, no new switches.
Road beacons, warning strobes, rotating lights. Assign them to armrest buttons. No extra switches to mount.

Spreader gates, seed shut-offs, air valve blocks. Same 12V control, same joystick buttons.

Linear actuators and small motors. Anything 12/24V pulling under 10A.

Wash pumps, transfer pumps, oil or liquid cooling fans. Assign each one to a joystick button. No toggle switch to wire in.

Run a twenty-year-old seed drill from the tractor's own screen and AUX-N buttons. Wire its functions to relay channels, or have the whole build made for the machine.
Have it built for your machineLonger reading on the parts, the wiring and the terminal.