Posting the circuit diagrams of two types of head units - Clarion and Pioneer (latter used in soft-dash Classics, and a version of it - in Disco 1), as well as a couple of other connection diagrams.
I've been using transformer coupling on most aftermarket/factory or ham radio/factory amp combos. Practically, without a transformer the noise/whine is guaranteed on a Classic with rear-mounted amplifier.transformer coupling was the easiest I found. I believe you recommended the exact model I ended up using in a post a long time ago.
I have one of the boxes you made to hook a audio Jack input into what used to bring in the cd input.I only shared the shit code when I was clinging on to the proof of concept build way too long. If someone can trace through that and figure out what I was thinking 8 years ago, good on them. Still, it should compile just fine in arduino IDE for an uno or mini. Uno built in voltage regulator is more robust. A D1 alternator will kill the on board caps of a mini in no time.
Here's a more homebrew friendly connector shell. It uses the crimp pins that a DB9 or DB25 male shell would use. 3D prints fine on ABS. I stopped using them when I went to printed circuit boards. Crimping db pins sucks.
There will be a serious ground loop if you charge whatever you are using at the same time as playing it. transformer coupling was the easiest I found. I believe you recommended the exact model I ended up using in a post a long time ago. Triad Sp-67. They are red, and expensive. Bass roll off is only noticeable if you really pay attention.
I could use one, too.I have one of the boxes you made to hook a audio Jack input into what used to bring in the cd input.
My workbench is full of unfinished electronics projectsYou could brew one up with the above files![]()
I've had my eye on this for a while but am trying to find a deal. Recently I looked on Crutchfield and they show it as discontinued so maybe I'll have to just bite the bullet and grab one soon.On a similar note, I installed a Blaupunkt SQR46 in one of my classics and it's pretty sweet. It looks old, almost factory, but has BT streaming.
That's a bummer if they really are discontinued. It's a pretty cool retro unit. Looks like they're still available from a couple places.I've had my eye on this for a while but am trying to find a deal. Recently I looked on Crutchfield and they show it as discontinued so maybe I'll have to just bite the bullet and grab one soon.
When/if my CD player dies I will need to figure this out. For now I simply intercept the audio lines from the CD player to the head unit and fool the head unit into believing a CD is playing.You could brew one up with the above files![]()
There's a bit of art in it.fool the head unit into believing a CD is playing.
I used multiple sized drill bits to remove the chip. Once I got the 4 connectors on one side loose i just moved the chip back and forth until it broke free. I reassembled the tape machine and it worked as promised after hitting the arrow button 5 times. Easy enough and I would do it again without hesitation.You could also rip this IC off the board and the code becomes any button that isn't a number pressed 5 times. For example, you could press the next track button 5 times and it would be happy. If you press '1' 5 times it will beep like a bad code was entered.