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paulsmaroon924 · Joined: 20 Aug 2009 Posts: 176 Location: IRELAND

im popping in an expensive new stereo and i want to ensure i dont F%^K it up.... so in the interest of that id like to know what each of these wires is please, they all seem to be original spec and are all defo supposed to be there. i just dont know which is which?

i took the photo against a white background to make colour identification easier.

thank you folks.

owenexile · Posted: Mon Apr 12, 2010 8:41 am Post subject:

Hi ,My Car doenst got a Plug like that in it , Ive had my Stereo out a few times , and theres Defnetly no such thing in my car. My Best guess is , One is for Rem (3.3V) , Brown- Earth , Other to Might be 12V+ , But a Volt Meter Can confirm my theory
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924 1982 N/A
For some reason theres always a earth problem somewhere with this car...

paulsmaroon924 · Joined: 20 Aug 2009 Posts: 176 Location: IRELAND

its not the orig plug, thats just an electrical connector plug im using to mate all the wires with the new stereo. whats the 3.3 volt for?

Rich H · Posted: Mon Apr 12, 2010 7:42 pm Post subject:

Normally I'd expect:

Permanent 12v
Ignition 12v
Ground (Brown)

The other wire might be for the electric aerial (raise when radio on, standard on some cars) or a light connection (so the radio does bright/dim with the lights, unlikely on a 30 year old car but possible)

You also need to find the 4 speaker wires.

Easily checked with a meter.
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

owenexile · Posted: Mon Apr 12, 2010 11:28 pm Post subject:

bell · Joined: 08 Nov 2009 Posts: 10 Location: Celebration, FL

First question......does your car have the separate fader control switch? If so you'll want to eliminate it.....
You'll see 2 sets of wires going into it, the 4 sets coming out for the speakers.....they will be white and white w/ black stripe, and 3 other different colors (I forget what they are), use a 9 volt battery to "pop" them to see which is which.....the black striped will be the neg for the speaker.....

For power connections.....
Use a multimeter or test light to confirm, you'll have....

12v+ constant (battery for memory.....yellow wire on the aftermarket cd)

12v+ switched (comes on with key.......red wire on the aftermarket cd)

Ground (will be the brown wire....black wire on the aftermarket cd)

Atatched to the antenna lead in the car is a thin black wire if your antenna is in the windshield, hook that up to the blue wire on the new radio as it powers the stock antenna booster, if its not there you won't use the blue