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Electronic transistor ignition for cars

Velleman K2543: Electronic Transistor Ignition Kit

Velleman K2543

The Velleman K2543 Ignition Amplifier Kit for Cars

The K2543 is a Kit and Requires Assembly

Realizing your vehicle no longer has the strength that it used to can be displeasing to say the least. Or perhaps your car is running fine, but you still want better overall performance. The Velleman K2543 ignition was developed specifically to enhance the components needed to improve the overall feel & capabilities of your vehicle.


The K2543 brings your vehicle:

  • Improved ignition, making the engine start smoother on frigid days

  • Pollution reduction

  • Fuel efficiency

  • Burning of fuel-air mixture enhancement

  • Decrease in repair costs

  • Completely shockproof technology


K2543 Ignition Functionality

Once properly installed, the electronic transistor ignition wraps across the existing ignition coil to produce pulses, which increase the overall spark performance. Made specifically for petrol & gasoline engines, the Velleman K2543 is designed for cars with a 12V negative earth electrical system. This part can also be modified to for use with 6V systems as well. Past customers have installed the unit on tractors and other recreational vehicles with satisfying results!



  • Maximum current: 4A

  • Connection speed: up to 500kHz

  • PCB dimensions: 70 x 35mm (2.8" x 1.4")

  • Product format: SELF-ASSEMBLY electronic kit

  • Suitable for use with negative earth vehicles only


Assembly Hacks

While many makers enjoy tinkering with their K2543 kits, it's crucial to have the correct tools and a bit of building experience to ensure you get optimal results with your ignition. For assistance, view the Assembly Manual under the "downloads" tab.

Necessary Tools: soldering iron  – resin core solderPhillips screwdriverneedle nose pliers diagonal cutter

Additional Information

Difficulty Level 2


Parts list
English assembly instructions through illustrations, pictures, etc.

Assembly instructions
Written multilingual manual explaining how to build the kit

Info Sheets

Resistor colour code

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product