Quoth Al Patrick in :

You may be talking about the computer control device, often just called
the "computer". Don't know how "noisy" these can be in autos.

Pretty bad. In my 95 Buick Century, it's located behind the glove
compartment, in between the radio antenna and the radio. It REALLY messes
with weak signals.

--
"I am afeard there are few die well that die in a battle; for how can they
charitably dispose of anything when blood is their argument? Now, if these
men do not die well, it will be a black matter for the King that led them
to it; who to disobey were against all proportion of subjection." - W.S.