Now that you have the shell off, if this an old style radio where you twist a knob to turn it on, then the 12V+ power lead will go to the on/off switch. You should be able to find it with a continuity tester. The speaker leads should go to power amplifier ICs, or transistors, or in older radios, output transformers.
On Sunday, August 9, 2015 at 4:37:28 PM UTC-5, Bert Knupp wrote: > > Hi, Glen (and others), > > Thanks for the tips. I took the shell off this radio and determined that > it's made in Italy, but learned little else. I'm pretty sure the black is > ground, as it's commoned with the antenna-plug shielding. So that kills the > DIN hypothesis. I've found there are a couple of US aftermarket standards > that might apply, though they have striped tracers, and mine has none. Car > radios often have a battery-hot wire (30) to maintain memory; an > ignition-hot wire (54) to allow operation only with ignition switch on ACC > or RUN; and an instrument-light wire (57a or 58) to illuminate at night. > I'm assuming (!) this one has four + speaker wires and uses a - grounded > speaker installation. So I'll begin careful testing. > > The truth: I'm planning a concealed mount for the radio/cassette player > where it can play a cassette I have of an hour of German police calls. I've > tapped into the power switch in the old Telefunken FuG-7b Sprechfunkanlage, > and also into its faceplate speaker plus an under-dash communications > speaker. Right now I use a remote boom-box for the sound effects at shows, > but that's pretty unsophisticated. > > > > -----Original Message----- > From: [email protected] <javascript:> [mailto: > [email protected] <javascript:>] On Behalf Of Glen Hadley > Sent: Sunday, August 09, 2015 7:25 AM > To: [email protected] <javascript:> > Subject: Re: [vintagvw] VW radio wiring plug > > I don't know all of them, but the DIN standard makes the brown wire the > power ground. In most systems, red is ignition hot and yellow is > battery+, but I'm not certain this one would follow that convention, it > could easily be reversed. Black is usually the speaker common. Beyond > these guesses, I'm at a loss. > > glenh :<)>. > > On 8/7/2015 3:28 PM, Bert Knupp wrote: > > Volks, > > > > I’ve acquired an AM-FM-Cassette radio, probably 1970s vintage, with a > 9-pin connector pigtail, an antenna plug, and one stray violet wire. > > > > Who knows the harness color coding for such a radio – possibly > aftermarket -- with red “VOLKSWAGEN” on the faceplate? > > > > The nine plug contacts are wired from the radio as follows: > > > > Org Red Brn > > > > Blu Yel Grn > > > > Wht Blk Gry Vio > > > > Can somebody tell me what wire is which? They disappear into the box > and I’m hesitant to open it. The usual assortment includes (in no > particular order) +power, -ground, +ignpow, instru-lts, RF spkr, LF spkr, > RR spkr, LR spkr, with the speakers using a common ground. > > > > Bert Knupp > > > > > -- Visit the VintagVW archives at http://www.mail-archive.com/[email protected] --- You received this message because you are subscribed to the Google Groups "VintagVW - Air Cooled Volkswagen Discussion List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/vintagvw. For more options, visit https://groups.google.com/d/optout.
