Twilightblue28A

I tried sending a private message unsuccessfully. If you have the CD changer, I'm interested!

Twilightblue28A

The CR-1 and the Alpine 7807 were both available on the 1995 model. Both radios were manufactured by Alpine. The CR-1 is Porsche branded and is an AM/FM Stereo with an in dash cassette player. You could add the CD changer to the CR-1 in the trunk.
The Alpine 7807 was an AM/FM Stereo with a single in dash CD. You could also add a CD changer in the trunk. I have never seen an Alpine 7807 Porsche branded.
In the model year beginning 1996, Porsche switched to the Becker radio.

abiazis

Correct 7807 was not branded with Porsche logo....

akrca4

Still running my Alpine 7618 I had since 93’. Bypassed the Nokia amp and using TranzIt Blu for streaming audio from my phone. Works great!

Andy

JonRoger

Andy, can you say more about bypassing the Nokia amp? I want to get bluetooth or aux input to my Alpine 7807 system - without replacing the radio.

akrca4

Hi Jon:

The previous owner of my car had an aftermarket amp already installed so I just used the same wiring. If you have HiFi option in your car, I think bergvillfx sells the harness to bypass the Nokia amp:
https://www.bergvillfx.com/index.php...fi-bypass.html

However, if you are just looking to add bluetooth connectivity, The Tranzit Blu I have taps into the antenna lead so you don't need to change any wiring on the amp side. Keep in mind that I have had it for about 5 years already so there might be a better solutions out there now. Hope this helps!

Andy

JonRoger

Thanks - I see that I mis-worded my question. I meant bypass to the amplifier. Ie, connect an aux input (mp3 player) into the Nokia without cutting cables. At the Nokia end. Possibly the answer involves a 70-1785 cable, but the exact details aren't clear to me. Or maybe the Alpine 7807 has a CD changer input that could be used as an aux input? I'd use an FM transmitter, but I've heard that sound quality is poor (true?).

Some info here, but his wiring changes were at the radio end:
https://rennlist.com/forums/diy-subm...head-unit.html

akrca4

I don't think 7807 has Ai-Net, if that's case then you can just use the Ai-Net to RCA adapter for AUX input. I am not sure if there are any AUX adapter for the old Alpine CD changer input...
The Tranzit Blu directly plugs in into the antenna plug on the headunit so I guess it's a little bit different from other FM transmitters. The sound quality is actually better than I expected but I think that also depends on the headunit. You can also contact SW Stereo, they specialized in European radios and accessories, maybe they would know more about how to tap in to the Nokia wirings. Sorry couldn't be more help.
http://www.swstereo.com/index.php

JonRoger

Thanks. Perhaps direct input to the antenna is acceptable. The iSimple IS31 is inexpensive enough to just try it.