Originally Posted by
cjwood555
The fact it gets worse with the HIDs on (i.e. more power load) points towards the alternator, rather than the leads. The question is whether it's being radiated or conducted.
If the ferrite doesn't help when on the aerial lead, try it around the 12V radio feed along with a direct earth as mentioned before.
Chris
ahhh ok so its not the units causing the interference as such, its the electrical loading on the system that causes the interference.
i looked in ebay for the ferrite cores and they are availible (mostly from china) in all sorts of sizes...any suggestions?
would it be worth checking the earths on the battery etc? could this affect reception, i have also hear of people having problems with the aerial lead on the mk1 focus, but as it runs along behind the dash along the bulkhead its a real paint to change!