Towbar Fitting & Wiring - Level 3 Course

Advanced Towbar Technician with Diagnostics

With new technology constantly being added into motor vehicle management systems, nearly all vehicle manufacturers are now demanding that any accessory being fitted into their vehicle has to become a direct extension of the whole vehicle management system.

This creates a problem for towbar fitting as the fitter may be open to litigation if 'on board' vehicle safety systems are not activated. To reduce this liability towbar installers must be equipped to understand and work with these new vehicle systems so safety features such as vehicle and trailer Electronic Stability Programs react and operate as the vehicle manufacturer intended.

All the delegates will receive relevant and useful information which will help them to work with more confidence on newer vehicle systems.

Designed For

All people who have either completed the Foundation Towbar Technician course or the assessment questions and have responsibility for installing towbar's on the new CANbus management system vehicles.

This single day course is based around learning about the new CANbus vehicle systems, TSP (Trailer Stability Program), ESP (Electronic Stability Program) and understanding the practical and potential implications for the towbar technician.

Vehicle specific wiring kits and their application are covered in detail. Diagnostic software will be demonstrated providing an overview on re-coding vehicle management systems for fault code removal and also to activate towing functions. 

The course provides a combination of theory, practical activity and informed discussion addressing current vehicle issues and the opportunity to understand and offer the correct interactive towing electric solution for these vehicles.


All successful delegates will receive an NTTA Unit Award certificate of competance valid for 3 years.



All delegates who have completed our courses are listed on the NTTA National Skills Register.

Course Content

  • History of CANbus
  • CANbus Types & Developments
  • Engine management systems
  • CANbus Cables & signals
  • How to recognize vehicles with CAN’s
  • Modules, CPU’s & ECU’s and connecting the towbar interface
  • Troubleshooting, fault analysis
  • Exploring the use of diagnostic equipment


All delegates details and achievements will be recorded in the NTTA National Skills Register.

Contact us now or give our office a call on 01625 433251 for our course prospectus which includes the training details



"I found the towbar fitting & wiring level 3 course was excellent and would highly recommend it to any professional towbar fitter. "
Steven Jaques, Jaques Towbar Services
"On Tuesday Ben and Dan attended the towbar fitting & wiring level 3 course and after speaking to both of them on their return I would like to thank you, Nigel and Andrew for what sounds like a very informative course, very proffesionally run. "
Ambrow Trailers
Phone Number 016325 433 251