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? And then maybe
contact GoWesty if it's their product responsible for the interference.

I have LED brake lights and high-mount brake light from GoWesty and have no
problems with radio interference.

-Mark

On Fri, Mar 16, 2018 at 9:25 AM, Stuart MacMillan <stuartmacm@gmail.com>
wrote:

> Figure this one out:
>
>
>
> When I depress the brake pedal I hear a faint high pitched "whine" from the
> radio. It's pitch (frequency) changes with pedal pressure (higher with more
> pressure), and only happens on AM stations. Unfortunately, my favorite
> sports radio stations are AM so I hear it often.
>
>
>
> It didn't change with a new radio last year, and I do have LED brake lights
> and the GW high mounted LED brake light. Brake light switches have not been
> replaced.  Whine was there with the 1.9 engine and is unchanged with my '93
> Subaru 2.2 engine conversion. I have not switched the bulbs back yet, but
> I'll give that a try and see if it goes away.
>
>
>
> It's just a nuisance, but I'm stumped, particularly by the change in
> frequency with pedal pressure. Any ideas why LED brake lights might cause
> this? Maybe install a capacitor on the radio like this?
> https://www.amazon.com/PAC-CSS12-Passive-Filter-Capacitor/dp/B000CEDZBA
>
>
>
> Stuart
>
> '85 Westy
>