Well what I remeber from my days as an electronic technician, I would
say that you already have capacitor in the circuit, a VERY BIG
capacitor.
Meaning that the amount of time between brake application and
volume of "pop" are related to how much the BIG capacitor has time to
charge. The longer between the brake application the longer the
capcitor has to charge and try to reach full charge. You prably have a
dirty ground connection. Somewhere where corrosion has had a chance to
build up.
The reason that your other radio did'nt do it was 1) either you were
using a different connection for ground and power, or 2) it had better
noise protection built in to it.
How to fix... That depends on whether or not you can rule out number
1 or number 2. If you rule out number 1 and it did not use a different
power connection (this includes the connector from the car also). Then
it sounds like you had part of your noise protection circuitry die,
probably a capcitor.
If you did use a different power connection for the other radio, then
start by looking at the connector, its connections, and where it ties
into ground. If there is ANY corrosion at any of those points, clean
them.
If it ain't either one of those, it could be corrosion in the brake
light circuitry. So chase down all of its connections, and you will
probably find your problem.
Bruce...
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