Our standard variable controller unit comes ready to install, so that all you need to do is to connect a 12V ignition switched power source and then install the adjustment knob into a proper place. Normally, out of sight.

It comes completely pre wired and includes an adjustment knob, installation manual and ECU plug

Electric power steering uses an electric motor to assist the steering. The steering ECU receives information from the variable controller that usually come from the vehicle speed sensor and engine speed sensor, near impossible on older vehicles. That is why you need this controller unit; it sends information to the ECU according to the position of the knob which in turn will determine the steering assistance level.

How to adjust steering assistance


Adjustment knob turned fully anti-clockwise

= no steering assistance


Adjustment knob turned fully clockwise

= maximum steering assistance


Between these two points, you have various intermediate steering assistance levels.

Why Our Controllers

There is a long list of vehicles that use our electric power steering controllers which are all hassle free. These units are easy to install, small, durable and work very well. They are also compatible with all our steering systems.

Our units are professionally made circuits on a custom PCB. They are RoHS compliant (Restriction of Hazardous Substances) which is an EU directive intended to protect the environment by forcing manufacturers to remove environmentally hazardous substances.

Other Controller Types