Modifying integrated cell phone system to work with my cell?

T

tolik

Registered
The cell phone on my 1994 Mark VIII has never been hooked up or used. I was wondering if anybody had wiring diagrams and suggestions for how to mod it so that when I answer a call on my cell, it works through the integrated system (including the mic for my voice input, and using stereo for voice output).

Any suggestions, wiring diagrams, etc, appreciated. I figure I'll have to shimmy the wires and hook them up to some sort of cheap ebay-bought thing, but I'm not sure where to start. My cell is a Sanyo 5300 (on SprintPCS), although I don't think that makes a difference. I'm almost sure there's no way to use the antenna since the frequencies are completely different, but maybe I'm wrong.

Thanks!
 
RE: Modifying integrated cell phone system to work with my cell?

I don't have an answer except to say you can get complete wiring schematics and manuals from Helm(www.helminc.com). I have such for my '93.

It would be cool but I have not seen any type of mobile converter products to adapt digital phones to analog mobile systems. It would have to most likely be a custom job. I do believe it could be done with just a phone's car kit spliced into the car's wiring. I'm not sure about Sanyo, but the Nokia car kits we use at work have standard microphone and speaker outputs.
 
RE: Modifying integrated cell phone system to work with my cell?

I would think that the costs of modification would be greater than buying a hhands free kit for your car. Sanyo may make a hands free that is mounted behind the dash. Probaby the microphone that is in the car could be used instead of the one that comes with the kit. My Sony Ericsson hands free kit cost only about $55, they are cheap enough.
 
RE: Modifying integrated cell phone system to work with my cell?

thanks driller.

I'll order the manual and take a look. All the fun is in been able to use the integrated mic and cars original system... there is no analog/digital conversion involved except for matching the impedances, since I just want to hook a system from my cell into the car's system. I opened the center console area, and it doesn't look easy.


1994 Mark VIII. 44300 miles.
Pictures: http://pg.photos.yahoo.com/ph/tolikphoto@sbcglobal.net/album?.dir=/ae47
 
RE: Modifying integrated cell phone system to work with my cell?

Here's a start:
The pins and the wiring names on the actual '94 cell phone in the trunk. All phone connections go there. It is C413, a 25 pin plug.

Pin 1 Dark Green Transmit Audio ON/OFF. To Handset
Pin 2 N/C
Pin 3 Black/Light Green Ground. To car body
Pin 4 Red/Yellow Battery (+). To in-line fuse - Always hot
Pin 5 White/Pink Ignition (Hot in Run or Acc) fuse 17
Pin 6 White Receive Audio To Handset.
Pin 7 N/C
Pin 8 Dark Blue Regulated +9.6V. To Handset
Pin 9 N/C
Pin 10 Black Phone Data. To/from JBL Amp
Pin 11 Red T-DATA. To/from Handset
Pin 12 Orange C-DATA. To/from Handset
Pin 13 Red Talk Input. To/from JBL Amp.
Pin 14 Black Transmit Audio Shield To/from Mic
Pin 15 Red Transmit Audio from Mic
Pin 16 Red/Yellow Battery (+). twinned to Pin 4
Pin 17 Black/Light Green Ground. twinned to Pin 3
Pin 18 Yellow R-DATA. To/from Handset
Pin 19 White Phone (+). To/from JBL Amp
Pin 20 N/C
Pin 21 N/C
Pin 22 White Phone Data. From Mic (pushbutton to gnd.)
Pin 23 Black Handset Logic Ground.
Pin 24 Tan Handset Audio Ground.
Pin 25 Dark Green Accessory Ground. To/from JBL Amp

8 wires go to the Handset through C359 (in the console):
Pins 1, 6, 8, 11,12,18,23, & 24.

4 wires go to the JBL Amp (same place as the cell phone transceiver):
Pins 10, 13, 19, & 25.
3 wires go to the Mic module from C911 (in the driver's side pillar):
Pins 14, 15, & 22.

2 wires are power at all times:
Pins 4 & 16. Twinned in in-line fuse, fed by fuse inside engine compartment.

2 wires are Hard Ground:
Pins 3 & 17. G202, located behind center of I/P, near radio.

1 wire is switched + Batt.
Pin 5. From I/P fuse #17.

Good Luck! You may be able to use the antenna if you cut it to 1/4 or 1/2 frequency length and get rid of the center loading coil.
 
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