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TamarBlue11

Member Since: 25 Sep 2020
Location: England
Posts: 226

Radio crackling when headlights on

Hi Guys, my 2011 Defender has standard headlights (currently) however when these are on the radio signal is alot worse. Has anyone come across this before? Is this an earthing issue?

11th Feb 2022 9:06am

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4209

2007 Defender 110 Puma 2.4 XS CSW Java Black

If you've no LED lights, then earth would be my next port of call. 2007 110 TDCi Station Wagon XS

11th Feb 2022 11:13am

TamarBlue11

Member Since: 25 Sep 2020
Location: England
Posts: 226

Thanks, is it best to look first for a dodgy earth at the headlight end?

11th Feb 2022 12:42pm

Bluest

Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4209

It'd certainly be the easiest to check. I don't know where the chassis earth is for the headlights. 2007 110 TDCi Station Wagon XS

11th Feb 2022 2:00pm

TamarBlue11

Member Since: 25 Sep 2020
Location: England
Posts: 226

Only just getting round to looking at this again. Does anyone know where the headlight circuit is earthed?

31st Aug 2022 8:40am

Penfold_6290

Member Since: 22 Sep 2021
Location: Dorset
Posts: 317

The headlights earth back through black wires, they run in the main loom on either wing, there will be two large connectors next to the bulkhead, one each side, then the earths go to an earth header on the bulkhead.

I'de be inclined to unplug the headlight bulbs, switch the headlight switch on and then see if the crackling exists. If it doesn't crackle, replace one plug at a time to see if it is created on one side rather than the other. Bear in mind the headlight circuit also provides current to other circuits such as rear fog light and headlamp levelling motors (if fitted).

3rd Sep 2022 9:48am

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