Cd player noises in 1999 grand prix.

[[email protected]]

I just recently got a 1999 Pontiac Grand Prix. When we got it the
dealer said that the previous owner had an aftermarket CD player in it
but removed it when he sold it. Ive been working all day trying to
hook it up. Its a cheap Durabrand CD player and I found the wiring
diagram and hooked all the wires accordingly or so I think.

When I turn on the car and CD player it makes a weird buzzing sound
and the display pulses. I am out of ideas on how to get it to work.

[D.Kreft]

On Jan 28, 7:52 pm, wrote:

> When I turn on the car and CD player it makes a weird buzzing sound
> and the display pulses. I am out of ideas on how to get it to work.

"Durabrand", eh? Hrmm. Well, ideally, I'd say that the first thing you
should do is to connect the CD player to a test bench where you have a
known-good supply of 12V power and a known-good set of speakers. If
the thing has problems on the bench, then you don't have to worry
about trying to find out what in your car is the problem.

Sometimes the problem you are describing can be caused by a poor
ground--if (what I presume to be) the black wire isn't making good
contact with the car's chassis, or if the part of the chassis to which
you are connecting doesn't provide a low-resistance path to the
battery's (-) terminal, then that can cause issues. I've actually seen
radios with noise problems whose ground lead wasn't even connected to
anything and the radio still worked (albeit noisily) because the radio
was seeking ground through the antenna shielding.

Ultimately, though, I think you best bet would be to contact a car
audio install shop in your area and have them take a look at
it...unless the sum of your time, patience and electronics experience
greatly exceeds your monetary funds, this could prove to be a rather
infuriating task--tracking down noise problems in an inherently noisy
environment like an automobile is no fun for the pros, let alone for
"shade tree" installers.

-dan