Date: Mon, 31 Jan 2011 14:11:09 -0800
Reply-To: Don Hundt <dhundt@BENDBROADBAND.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Don Hundt <dhundt@BENDBROADBAND.COM>
Subject: Re: Audio help: 3.5MM to RCA pinouts/cabling (new stereo is in)
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why not just drill a small hole in the bottom of the ashtray and run your
cable up through that? you could set the ipod in the ashtray when you are
using it, when not in use close the ashtray and the cable is invisible.
Don
----- Original Message -----
From: "Roland" <syncronicity1@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, January 31, 2011 11:15 AM
Subject: Audio help: 3.5MM to RCA pinouts/cabling (new stereo is in)
> Hello folks,
>
> Got the rear speakers in, front speakers in, new headunit in, but .... no
> AUX yet.
>
> I could use some help on cabling the headunit AUX to a 3.5MM jack. The
> headunit is the old variety that had a multi-pin port to control one of
> those (now old fashioned) multi-CD changers that people put in the trunk.
> There is an adapter cable that converts this port into RCA inputs so when
> I
> select AUX on the headunit I can connect my Android/iPod. This is the
> cable
> I bought:
> http://www.crutchfield.com/S-GkesNsq9Xrm/popups/accessory.asp?i=113CAC1AX
>
> My wish is to mount a 3.5mm jack on the dashboard, so I need to connect
> the
> 2 female RCA connectors to a 3 conductor 3.5mm jack. I found 3.5mm jacks
> at
> Radio Shack, really small and flimsy. I'll cut an RCA cable I have in the
> garage with 2 male connectors to plug into the AUX/adaptor cable, and to
> get
> access to the wires to connect to the jack.
>
> Evidently these are the pinouts for the 3.5mm jack:
> http://pinouts.ru/Home/Tele35s_pinout.shtml
> 1-left signal
> 2-right signal
> 3-ground
>
> Evidently these are the pinouts for the RCA jacks:
> http://pinouts.ru/Home/rca_connector.shtml
> Red center: right signal
> Red outside: ground
> White center: left signal
> White outside: ground
>
> So the connections look somewhat obvious, my question is about the ground.
> Do I connect both the ground for the red RCA plug and the white RCA plug
> to
> the single ground circuit of the 3.5 mm jack?
>
> Side note: of course this is easy by buying a cable that provides a 3.5mm
> plug to 2 male RCA connectors, plenty available, but that means having a
> 3.5mm plug dangling out from some crack in the dashboard -- I am just
> wishing a cleaner installation with a 3.5 mm jack on the dashboard. Some
> people route this cable to the glove box so the iPod is tucked away but I
> can't reach the glove box from the driver's seat.
>
> Thanks!
> Roland
>
> ======================================
> Other details in case people are interested:
> '89 GL with airconditiong, power windows, power door locks
> Headunit: Kenwood KDC-516S
> Front speakers: Alpine SPS-500: 5", just barely touch the dashboard,
> mounted on the panel, my measurements were not accurate enough :(
> Rear speakers: Boston Acoustics S45 4"
> No power AMP, luckily it plays plenty clean and loud without it, even
> though
> I know it would sound better with an amp.
> Sound is terrific. (what ancient stuff was there before? 5" Jensens with
> warped paper cones, 4" Sonys with decayed foam speaker surround).
>
> Lessons learned:
> - The 4 wires going to the rear speakers on these later Vanagons are
> adequate (minimal loss, no need to run new cables that I can determine).
> - Do solder/heat shrink tubing all connections ( the previous headunit
> wiring harness had some funky combination of butt/crimp connectors, black
> electrical tape, and wirenuts!). A lighter works fine to shrink the
> tubing,
> no need to buy another plug-in appliance. Use cable ties to keep things
> neat.
> - Do cut out the old steel mounting bracket for the OEM radio to make room
> for headunits that otherwise would not fit.
> - Do debug the reason why the drivers side power door look won't fully
> work
> while the panel is off.
> - Do not wonder why the power windows don't work anymore when all is
> reassembled! Typical, I must have messed something up!
> - Do connect the "auto dim" feature of the headunit (dims the display when
> the van lights are on). There is a blue/grey wire running right under the
> headunit that is power to the cigarette lighter light.
> - Other upgrade, I think I'd like to rewire the power to the key-in power
> method mentioned here and others places:
> http://www.vanagonauts.com/Radio-Power-From-Key-in-Circuit222.htm.
> Problem
> is I can't stand working behind the fuse panel, fat fingers, I admire all
> of
> you who can do this.
> - Do install FAATMAT or your favorite sound proofing stuff while the door
> panels are off. Oddly I found some sound proofing inside the front doors
> already, some kind of black stuff, kinda like roofing shingles without the
> stones. I was wondering if that was OEM or not, but I added some patches
> of
> FAATMAT also, and will do the side door and all the other side panels in
> back in the coming weeks. One of the reasons I chose FAATMAT is that
> GoWesty offers this one, but of course is much much cheaper on ebay.
> - Do look forward to next Christmas when you can wish for a small
> subwoofer
> with embedded amp.
>
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