Reducing radio static from HID's ....What's best?

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Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Thu Mar 14, 2019 10:00 am

Now I don't listed to the radio that much, however when I do I don't want the signal to be interfered with by my HID's. I've tried ferrite coils, not much success. I haven't as yet grounded the ballast to the bodywork which is my next thing to try.

I've read about covering the ballast with tinfoil but it sounds a bit daft. What other solutions have you guys done?

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Re: Reducing radio static from HID's ....What's best?

Post by ray112 » Thu Mar 14, 2019 10:19 am

I had cheap rubbish and not so cheap better quality hid kits through years and now factory xenons retrofitted on my last two cars, and never had any problems with radio. Can't it be some kind of wiring issue?

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Re: Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Thu Mar 14, 2019 10:21 am

The more I'm looking into it it looks like grounding the ballast will help, and possibly using grounded braided hose cover will help. It's all good fun....

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Re: Reducing radio static from HID's ....What's best?

Post by ct.p » Thu Mar 14, 2019 11:16 am

As above, a higher quality HID set (ballasts) is probably the answer. What have you got at the moment, where from, how much were they? Way back in the mid 00's most HID retrofit kits used 'dumb' ballasts, getting a modern canbus compatible set (although not needed on the B5.5) might help as the electronics will be better. Saying that I had my first set of HIDs back in about 2005 with a great big clunking set of old style 'dumb' ballasts without issue.

Saying that, the aerial bases are amp'd and suffer from water ingress, a problem I've had which, could also be worth a further punt. Also, assuming you have an after market HU, you do have the little external tube shaped thing that does the job of amp'ing the aerial output?
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Re: Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Thu Mar 14, 2019 11:33 am

The lights came with the car. But I've not securely mounted the ballasts so I will be doing that first as a ground.

As for the HU pipe I don't know what you're on about there haha

The aerial is new, I installed it and ensured it was powered.Image

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Re: Reducing radio static from HID's ....What's best?

Post by ct.p » Thu Mar 14, 2019 3:50 pm

The thingymabob...

If you have an aftermarket HU and not one of these then radio reception will be cack. (assuming it is an OE aerial)
https://www.ebay.co.uk/itm/New-VAG-Car- ... 2624966065
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Re: Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Thu Mar 14, 2019 4:50 pm

Oh yeah if you'd said an aerial booster I'd know what you meant. I have a few of those, always use them.

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Re: Reducing radio static from HID's ....What's best?

Post by Mindriot » Fri Mar 15, 2019 4:09 pm

Never had the issue with HID, I would certainly recommend Morimoto, my 5five ballasts are the best Ive ever used, the current ones would be XB35 or XB55

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Re: Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Fri Mar 15, 2019 6:37 pm

Mindriot wrote:Never had the issue with HID, I would certainly recommend Morimoto, my 5five ballasts are the best Ive ever used, the current ones would be XB35 or XB55
Cheers chap, I'll have a look about.

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Re: Reducing radio static from HID's ....What's best?

Post by gtijames » Fri Mar 15, 2019 7:46 pm

No problems with my led headlights, no ballast or loads of wiring too...

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Re: Reducing radio static from HID's ....What's best?

Post by Mindriot » Sat Mar 16, 2019 1:02 pm

Morimoto are hard to find in the UK though, I got mine second hand very cheap.

A quick look on ebay : https://www.ebay.co.uk/itm/Morimoto-XB3 ... SwENVcBHnP

Amp are the 2 round connectors most folks will have for their H1, H7 etc bulbs. 35W is more than enough for most projectors with good ballasts, 55W is sometimes considered too much and might degrade the projector lens and reflector surface over time apparently.

Also, often Hylux are referred to as pretty good choices : https://www.ebay.co.uk/sch/i.html?_odkw ... t&_sacat=0

These are also supposed to be good : https://www.retrofitlab.com/hid-ballast

When I fitted the Morimoto it was immediately obvious that they were brighter, start up quickly and so far theyve been very reliable.

There are ballasts that are now what is termed speedstart but just how quick that is who knows.

Unfortunately there may be a vast array of cheap ballasts, but getting a solid choice is very hit or miss, I used to buy the kits in the £50 range and even a few of them let me down, from now on I would only use aharon, hylux or morimoto etc.

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Re: Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Sun May 26, 2019 9:21 pm

Just as an update, I bought the Hylux ballasts, quality of the parts are superb. They have an extra earth cable which I thought might help however the static is still apparent, local station is fine, but radio 1 for example is still staticy....

Just need to get some more bulbs, as I think the old ballasts have knackered these bulbs.


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Re: Reducing radio static from HID's ....What's best?

Post by Mindriot » Sun May 26, 2019 10:57 pm

Good stuff, i rarely ever use my radio but its not getting any interference, my morimoto are earthed directly back to the battery.

How do you find them for startup, brightness etc.

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Re: Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Mon May 27, 2019 9:48 am

Hmmm, I might try a direct earth to the battery and see if it makes a difference.

As for start up time, they are definitely quicker than the previous cheap ones. I haver ordered a new set of 5000k 35w bulbs so I should see a difference.



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Re: Reducing radio static from HID's ....What's best?

Post by Mindriot » Mon May 27, 2019 11:30 am

Theyre just earthed like that because the ballasts are right next to the battery on a relay direct power feed.

A good body ground should usually be sufficient, have you tried a noise supressor on the stereo?

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Re: Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Mon May 27, 2019 12:39 pm


Mindriot wrote:
A good body ground should usually be sufficient, have you tried a noise supressor on the stereo?
Not yet, I think that's my next port of call is to play around at the head unit end.

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Re: Reducing radio static from HID's ....What's best?

Post by ray112 » Mon May 27, 2019 6:32 pm

But are you sure it's not head unit fault? Because I have had good quality and cheap poo hid ballasts over years and never had any problems with radio.

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Re: Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Mon May 27, 2019 7:46 pm

I do have another I can try.

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Re: Reducing radio static from HID's ....What's best?

Post by BIG F@ TW@ » Sat Jun 01, 2019 11:20 am

OK...

So I've tried a different head unit, same issue.

I've tried disconnecting the ballast earth cable, same issue.

The static is only apparent on Radio 1 but not or local station.

Without the lights on the signal is good with no static. I might have a check of the aerial again, I fitted a new powered one a while ago and although I'm sure I fitted it well, you never know.

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Re: Reducing radio static from HID's ....What's best?

Post by Mindriot » Sat Jun 01, 2019 1:22 pm

Losing radio 1 wouldnt be a problem for me :) I only use soundcloud or spotify when driving, and occasionally audible though audio books are risky driving long hours some can put you to sleep.

Just a thought :

https://www.lifewire.com/whining-noise- ... put-534592

https://betterautomotivelighting.com/20 ... eadlights/

I know how irritating interference noise can be. I do have an issue in my T5 where occasionally I pick up a noise thats as yet unlocated, I suspect is electric motor related, possibly electric cooling fan on the rad, but the head unit is going to need replacing so I havent chased it until thats done, I suspect its earth source related though it could be pickup at my amps or their input audio cabling.

I was going to try earth beads until the head unit started to have a problem, unrelated to power though its touch screen digitizer panel is failing :/

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