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Hello all, I'd like to share how I integrated an iPod directly into the 1993 240 stock sound system. Why keep the stock system? It's my sister's car and she wants everything original.
The 1992 and 1993 240's have a separate radio and amplifier, connected by a 6 pin DIN cable. I designed a wiring harness to connect in between these two, adding iPod as a second input to the amp. An automatic source switcher (the PIE MPSS-4) sends iPod audio to the amp when the radio is turned off and vice versa. This required two DIN-to-RCA/remote harness to be soldered (thanks Mark!).
The harness:
The iPod adapter used (the PIE RCAPOD) converts an iPod dock connector into RCAs, power, and ground. Since this bypasses the iPod volume control, an RCA level control (the Peripheral PRC1) "volume knob" was used. This fit perfectly into the radio faceplate's blank right side. After a little dremmel work and some screw spacers, the volume knob screwed into the original radio mounts and poked through the face plate.
The volume knob mount:
The good thing about this is, the harness is designed to allow input from any RCA source (not just iPod) and output to any aftermarket amplifier. So, if I stop being lazy and tear out the lower dash, adding a new amp would be simple (except I don't know how to run power and ground lines from the battery).
For now, it works like a champ, and the iPod sounds much better than the radio (through replaced Kenwood speakers). This project was a fun challenge. If anyone's interested in more information, pinouts, parts, etc, just post here.
The final install, using ProClip custom 240 mount, holding Treo 650 and iPod nano:
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- FireFox31
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