jad Posted January 10, 2020 Share Posted January 10, 2020 Firstly, I know!..... Buy cheap buy twice, you get what you pay for, probably won't pass MOT etc etc..... Well let's start off with the positives. A nice bright white light, flat beam, a good defined line , built in DRL and alternating indicator which definitely improves their visibility and only £50.... My feeling is that they should pass an MOT. Right the only downside I have found so far.... They are causing radio interference (white noise) when on dipped beam only. They do not cause issues when just the DRL is lit and they do not cause any issues when on full beam. Which for me is the interesting bit as this does not turn off the dipped beam it just lights an extra part of the light. So far I have tried 2 ferrite clips around the cabling from each unit, a capacitor at the alternator just because I had one lying around and earthing the shielding of the aerial cable. None of these has had an effect. If I disable the RH headlight then interference is much less as this is closest to the aerial (wing mounted). So I assume it is the cabling acting as an aerial. I also plan on trying an extra earth (jump lead) to make sure the earth on the wing is good and will try putting ferrite clips in other places. Apart from refitting the original headlights.... Has anyone got any ideas of things I could try to get rid of the interference problem? Cheers Jad Quote Link to comment Share on other sites More sharing options...
Gazzar Posted January 10, 2020 Share Posted January 10, 2020 Tin foil over the backs of the units? Some form of shielding, earthed, I presume, to stop the EM from the electronics getting to the aerial. Quote Link to comment Share on other sites More sharing options...
cackshifter Posted January 11, 2020 Share Posted January 11, 2020 Try something like .01uF capacitor from the dipped feed as near the headlight as possible to earth. Pure guess, others may have better suggestions. Quote Link to comment Share on other sites More sharing options...
jad Posted January 11, 2020 Author Share Posted January 11, 2020 Thanks guys. I will see if I have time tomorrow to pop the headlights out and wrap them in foil see if that makes a difference. My dad also thought of the capacitor suggestion so will give that a go when I see him next. He has some capacitors we can try. I had an interesting conversation with the seller on eBay and they talked with the manufacturer. This was their reply. "Thanks for contacting us.We are so sorry to hear that .We checked the problem, it's the problem of interference current, you will need a EMC.In this case, how about we send a EMC for you from China? It will take 7-15 days to reach you.If you agree, we will contact the supplier for this part.Please advise." So I'm going to receive an "EMC" so will be interesting to give that a go 😂 Cheers Jad Quote Link to comment Share on other sites More sharing options...
jad Posted January 29, 2020 Author Share Posted January 29, 2020 Well my emc's have arrived! Must be time to try them out.... Quote Link to comment Share on other sites More sharing options...
jad Posted January 29, 2020 Author Share Posted January 29, 2020 They work 😳 I mean not perfect... But significant improvement. If I open my door to ~45 degrees the radio starts to fuzz a bit so must be some Faraday cage effect going on. Will have to see how they are when I drive the car about... Thanks for your suggestions everyone! Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 30, 2020 Share Posted January 30, 2020 Wonder what's inside the "EMC" box, any way to can open it up & take a piccy? Quote Link to comment Share on other sites More sharing options...
jad Posted January 30, 2020 Author Share Posted January 30, 2020 Hmmm that might be a one way trip. There were no screws so might just nicely break when taken apart.... My dad thinks "Probably an inductor (also called a choke) in series and a capacitor across the line which is a high frequency filter Providing the choke is wound with heavy enough cable it should be fine" I mean if a part fails then I'll definitely take a look inside! Quote Link to comment Share on other sites More sharing options...
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