Brake light switches are pressure-activated items. Maybe that’s something. 

Chris

> Wiadomość napisana przez Neil N <musomuso@GMAIL.COM> w dniu 16.03.2018, o godz. 15:32:
> 
> And along the lines of isolating, I wonder if a portable AM radio would
> show the same issue?
> 
> My first thought was that the issue is ground related. i.e. is issue due to
> RF or some kind of interference "transmitted" through the Vanagon
> wiring/frame to the radio?
> 
> Neil.
> 
> On Fri, Mar 16, 2018 at 10:18 AM, Mark McCulley <mark.mcculley@gmail.com>
> wrote:
> 
> Can you remove the brake light bulbs and test to see if you can isolate to
>> the regular brake lights or the high-mount brake light?
>> 
>> 
> 
> 
> --
> Neil n
> 
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> 
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