A friend has a 1998 Grand and wants to install a Navigation stereo. I've wired evrything up and it works fine except for the Navigation calibrating. I'm told that there is a J1850 wire (white or yellow with a purple tracer) that needs to be hoojed up. I've looked all around where the stereo mounts in the dash and have yet to find it. Does anyone know where it is located or do I have to run a wire somewhere? Thanks in advance for the help.

A friend has a 1998 Grand and wants to install a Navigation stereo. I've wired evrything up and it works fine except for the Navigation calibrating. I'm told that there is a J1850 wire (white or yellow with a purple tracer) that needs to be hoojed up. I've looked all around where the stereo mounts in the dash and have yet to find it. Does anyone know where it is located or do I have to run a wire somewhere? Thanks in advance for the help.

Which navigation radio are you installing? Original Jeep navigation radio or some other company? I am trying to install GMC original navigation radio (Delphi mfg.), in my 96 JGC. Could you please help me with the wiring harness schemes? Thanks,