How Lightforce Solves Radio Interference from LED Driving Lights

You may have noticed that the Lightforce Venom LED and Genesis LED  both boast a “CISPR25” rating and “reduced radio interference” and wondered what that means for you.

LED lamps on your vehicle run the risk of causing EMI (Electro-magnetic interference). This is a particularly important safety concern when working in mining or emergency services, as EMI can interfere with your communication and electrical equipment, potentially causing malfunctioning.

Safety issues aside, it can also cause radio interference on your AM/FM radio which can result in fuzzy noises, cutting out and a whole lot of frustration when your favourite song comes on!

CISPR25 is an internationally recognised standard, covering allowable limits of electromagnetic radiated and conducted interference for components installed in vehicles. You may have heard also of CISPR15, which "limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment'. CISPR25 takes it a step further, relating to 'Vehicles, boats and internal combustion engines - Radio disturbance characteristics - Limits and methods of measurement for the protection of on-board receivers'.

Let’s break that down – Automotive electronic devices operate at different frequencies and hence emit a level of electromagnetic radiation and conducted interference. Automotive manufacturers specify limits on how much noise an after-market electronic device is allowed to generate. So, if you add a standard set of lights without CISPR25, you run the risk of your LED light’s frequency causing radio interference in some vehicles.

How do we do solve this problem? Here at Lightforce, we attack it from a few angles. We use combination of a shield to lower the intensity of radiation, and an additional filter to block the conducted interference. Smart design in the way we lay out the components within the light also helps.


How does the shield work?

The electromagnetic radiation is the part you are more likely to notice right away – because it causes radio interference. Our shield suppresses the electromagnetic radiation before it reaches or interferes with your other devices. We can’t think of anything more annoying than your radio cutting in and out or fuzzy noises . So, we make sure our Venom and Genesis LED driving lights don’t do that.


How does the filter work?

The filter works by preventing the conducted interference from entering into your vehicles electrical system. This prevents the circuit from becoming overloaded and possibly causing malfunctioning of your vehicles factory or aftermarket accessories. This is a vital condition that any lights within the mining or emergency services should adhere to!

Overall, we consider being CISPR25 rated an important feature when we design our LED driving lights, because when you are out there exploring or working, you need to be focused on the task at hand. Our lights work holistically with your WHOLE vehicle – by design.


Our top tips for reducing radio interference when installaing

With or without CISPR25 lights, you can help cut down the likelihood of experiencing interference by following the below guidelines when installing:

  • When installing the wiring harness and lights, keep wiring away from the antenna and antenna wiring.
  • Ensure that you have conductive earth and power connections to the vehicle.
  • Use genuine Lightforce wiring harnesses and accessories.