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The "CD43 Face on a JVC HU" Thread - Work in Progress

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    #46
    Thanks for the complements & encouragement. I am going to need them! Realistically, this project may take me a year or two (I have other hobbies that I sort of switch-off between, depending on the season).

    bernzspeed & dogsbark, a CD43 isn't as bad as it seems (if you are coming from more feature rich modern HUs). I believe that the crappy radio reception can be resolved by using a 318ti antenna + amplifier base, both of which are readily available at online wreckers. Just ask them to toss in the rubber grommet on the antenna & I believe it is a straight bolt-in (maybe a little finagling to get the base mounted in the trunk). Check around here. Aside from the radio part, using CDs isn't so bad. I ran with a Pioneer MP3 deck for years, and while it seemed convenient, I actually like being confined to using regular CDs. A lot of songs I disliked (you know, "I only like 2 or 3 songs from this CD") turn out to be fine or even likable if listened to in order on the actual album. I think that artists actually order things pretty deliberately so it all works together. That's probably part of the reason that a lot of songs seem like crap on their own.

    To get the CD43 to stay in place, you can try locking two thin nuts onto the stud on the back & then reaching around through the glove box to zip tie the HU onto that metal bracket on the heater core. The nuts help to keep the zip ties in place on the stud. I modded the HVAC panel to have tabs for the CD43 screw clamps, but that was a lot of work. I also use the zip ties in the back, as described, and I think it might be enough to keep it in place. I also put some 1/8" foam sheeting on the rear bracket to make it a little more "sticky." Good luck!

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    Well, I am going to put this out there right now since I would feel bad if I got expectations aroused at this point: I am not going to even consider selling some sort of conversion kit. The costs involved would be astronomical due to the amount of hand-rework required. I COULD make some little PCB adapters for some things that would cut the rework requirements way down, but the chassis mods & stuff would still be many hours. To make it worth my while would probably amount costs that most would consider unreasonable.

    I think I hinted at doing kits somewhere earlier in this thread, but that is entirely off of the table for now. Maybe in the future I could do a couple one-off duplicates, but I would probably charge a good $1000 for it (labor only). So, as I said, most people would consider that unreasonable lol. Since I try to be a reasonable guy, it seems best to just not offer. MAYBE once it is 100% done I'll have some better insight into making more.

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    Last edited by bmwman91; 09-28-2011, 12:26 AM.

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      #47
      Amen.

      Thanks for the tips.

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        #48
        im down to see the progress on this! lol
        sigpic
        ^Back in the game^
        BUILD THREAD: http://www.r3vlimited.com/board/showthread.php?t=201281
        FS thread:
        http://www.r3vlimited.com/board/showthread.php?t=214105

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          #49
          Alright, as promised, here are some pictures.

          The biggest pain was figuring out how to move the board-board connector that connects the CD transport to the motherboard. I ended up lifting it and setting the ends on Kapton tape, and then filling the middle gap with super glue. From there, I ran 30ga wire from the original pads to the terminals.


          Here is another angle. Once the wires were on, I filled everything in with more super glue. The last thing I need is this sucker breaking off if/when I need to take the unit apart in the future.


          Although I had to leave a couple of components in place & buried under the connector, I was able to move this resistor out of the way, just in case I ever need to service it.


          Now, to get the CD transport moved over, I needed to move its mount holes 1cm to the side. I used some calipers and a drill press to do this.


          The only real mods I needed to make were to grind off an alignment post, and as seen in this picture, flatten the old stamped mounting boss. A bench vise & some aluminum blocks were all that I needed.


          I also needed to press out some of the stamped screw holes in the side that the HD Radio module sat. The module had to be moved, and the screw bosses were interfering. Again, I used a bench vise & aluminum blocks.


          This capacitor was interfering with a big one on the CD transport board, so I moved it over. It is a decoupling cap for the USB 3.3V supply. Although a setup like this isn't exactly ideal since I bet it adds some noise to the supply rail, I doubt it will be an issue. Long-term, I plan to find a big surface mount cap & replace this with that.


          Here is the HD Radio module.I moved it as far to the side as I could. Remounting the EMI shield firmly to the board was a little tricky, and it is not quite as secure as before, but I think it will be OK.


          I was able to move it over by flipping the pin header at the bottom. Originally, it was mounted through the side you see in the picture. Being a simple single-row through-hole header, it was a simple matter of de-soldering it from the RF board & mounting it on the opposing side.


          It all worked out perfectly!


          This also leaves ample room on the other side for my control circuitry. I don't think that there will (physically) be too much stuff to jam in there, but there will need to be room for a small PCB with the microcontroller & various control / power electronics.


          I tested the JVC HU and the CD player + HD radio seem to be working fine. Phew!

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            #50
            DAYMM! Just unbelievable.

            John
            The Revolution will not be televised.

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              #51
              This really is a psychotic project, I love it.

              Closing SOON!
              "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

              Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

              Thanks for 10 years of fun!

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                #52
                Ahh, I remember this thread! I really love how far you are going to get rid of the typical "omg look at me/steal me" bullshit contemporary faceplate design.

                And, for what it's worth, if you want to post more in depth stuff, I will eat that shit up. BS in EE here, digital stuff is fuuuun.
                paint sucks

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                  #53
                  Awesome. I mean, I am just in awe. If you hadn't posted photos, it would be unbelievable.

                  Credit is due for performing an incredible task. Is there a rep button on this site?

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                    #54
                    there definitely should be a rep button on here..haha awesome job
                    sigpic

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                      #55
                      Amazing, I love it.

                      '91 318is - OBD-II S52 swapped - E30 M3 5-lug - 5x120 BBS RC090 (E39 Style 5) - TCK D/A coilovers 550/700 [SOLD]
                      '87 535i - Vacuum brake conversion [SOLD]
                      '93 525iT - 5-speed swap - 320k and counting
                      '09 328xi - 6-speed

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                        #56
                        hope to see more updates. this is super cool.
                        Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.
                        ---------------------------------
                        89 E30 S52
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                          #57
                          Originally posted by StereoInstaller1 View Post
                          This really is a psychotic project, I love it.
                          Agreed. VERY fucking cool.

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                            #58
                            Originally posted by StereoInstaller1 View Post
                            This really is a psychotic project, I love it.
                            Now that's what I like to hear! If it isn't hairbrained and crazy, it isn't worth doing!

                            I'm off to the eastern sierra for the weekend, so no updates over the weekend.

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                              #59
                              awesome. sub'd

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                                #60
                                You. Are. INSANE.

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