Re: 1998 - Install aux input/bluetooth from car radio
I know this is a dead link, but for future reference here is my experience with this issue.
I have a 1997 Civic DX with stock radio, no cassette player. Iíve tried a few methods for adding an auxiliary input (aux-in) for using a portable mp3 player or ipod, and have rated them on a ten-scale for effectiveness. The specific items Iíve tried are all available online; Iíd suggest googling them for pics.
First I tried using a FM transmitter, specifically the Scosche FMT4R, which uses AAA batteries. This method doesnít work very well. There is too much static, signal fades in and out as you drive, sound quality is poor even when signal is near perfect, and volume isnít high enough at high speeds. Cost is 20$, effectiveness grade is 3 out of 10.
Next I tried hooking a simple direct line auxiliary jack to the back of the stereo, specifically the Alpine KCM-123B. There is an 8-pin M-BUS input on the back of stereo head unit which is there for an optional cassette deck. But this method does not work at all, because the head unit does not normally recognize that anything is plugged into the M-BUS unless it is grounded. When you press the CD/TAPE button on the head unit, nothing happens, because the head unit assumes that nothing is there. Cost is 10$, effectiveness grade is 0 out of 10.
Not ready to give up on that M-BUS input, I purchased a more sophisticated cable with integrated electronics, which compensates for the lack of a ground, specifically the PIE Hon-Aux. This also requires an RCA to stereo 3.5 mm adapter cable, which some ebay sellers include for free. This method works the best, sound quality is excellent. One minor problem is that when CD/TAPE button is pressed, and mp3 player is not actually on, there is some light feedback noise, but again this is minor. Cost is 45$, effectiveness grade is 9 out of 10.
Note that if you happen to have the optional cassette deck installed in your car, you can just unplug it at the head unit to use that jack for your aux-in - who needs a cassette player these days, anyway? You may also be able to plug the aux-in into the back of the cassette deck (there may be another 8-pin input), but youíre on your own, there.