924Board.org

[nazri]

I installed a CD-player into my 924 a while back, along with new speakers etc. For some weird reason, everytime I start the car, when the CD-player comes on, the CD comes out and all the radio station settings are gone. This happens 100% of the time. It's not a major problem or anything it's just irritating. Yay the 20+ year old original radio is gone!!

[jamez]

well you could just hook the power for your cd player straight to the battery, it will work, but you will have to make sure to turn off your cd player when your not driving your car, as is wont turn off with your ignition.

[marky522]

I had the same prob. differnt symptoms, i never got around to fix it though, cause i parked the car, any way i believe what my prob was that when i put a tester on the constant + and started the car the volts went down to nothing, in turn losing all of the presets. The first thing i would reccomend would be run a known good ground, this could be the prob since the grounds are so bad maybe when you start the car your loading up the ground and losing your presets. Chances are you have the inconsistant pos.

good luck,

Mark

[Peter_in_AU]

recheck the wiring diagram that came with the player.

It should have 2 power inputs, the "standby" power should be connected to a circuit that is always powered i.e. connected directly to the battery, the other power in should be connected to your accessories circuit which gets power when you put the key in the ignition lock or turn the key to the accessories position (depending on what type of ignition lock you have). Your multimeter will confirm whether the circuits you've connected to are correct.

I would suspect the input for the standby power is either not connected or is connected to a circuit which is switched on/off by your ignition.

As most CD players have no backup power for their memory (how much does a 1f capacitor cost in lots of 100,000) the instant they loose power in both the main power and standby circuits it's back to square one

[Rick MacLaren]

I'd wire it directly to the battery with heavy gauge cable. If you're going to operate any high power unit in the car, be it now or in the future, like an amp or a high power deck, you'll need the high power cabling. And be direct. Electricity loves direct connections. Electricity hates fuses and multiple connections. Besides, even if you aren't operating at high power levels, the thicker gauge cabling will give you better sound with less engine noise.

Install also a small cap to reduce engine noise. Radio Shack has them for like $7.

If you go through the electrical system of the Porsche, EXPECT problems because, after all, it's a 20 year old car. To use a 20 year old electrical system for modern components is not wise. But, a direct connection to the battery is a no brainer that's reliable and optimally efficient.
_______________
1980 Porsche 931 Bitched.
1979 Porsche 924 Tweaked.

Panasonic Rebel Gear CD deck, Rockford Fosgate 100.2 Punch amplifier, Rockford Fosgate 240.4 Punch amplifier, 6 Boston Acoustic speakers.

[ This Message was edited by: Rick MacLaren on 2001-12-05 01:36 ]

[RobE]

Your memory lead is not hooked up the battery. The memory lead on most modern stereos are yellow. Double check in the radios owners manual, then if you can't find a direct line to the battery from your fuse box you can run another line directly from your battery just be sure that you place an inline fuse (15 to 20 amp) close to the battery. If you add amps later be sure to increase the fuse size if you use the same line to power the amp.

[Dave]

YA recheck the wireing. I had the same problem. You have to huck up the Aux wire for the CD player to a power source that is always on so the CD player doent lose its memory. Most CD players have 2 differnt power wires one for the CD players memory(must be a constant power) and the other for when you turn the car on.