Garmin 75 Data Connection

This uses information from Garmin's spec manual for the 75 and not from any
practical experience from the unit. This information is provided AS IS, and
with no warrantees as to its accuracy or useability. As with all information
on the web, verify against published and reliable sources (this is not a
reliable source) as we cannot take any responsibility for damage caused
to your GPS unit, your Macintosh, or your oven range by use or misuse
of this information.


Garmin 75 Data Connector                   Mac Mini Din 8
                                        (looking at front of cable)
    Pin 1 = 4~40 VDC+ (red)	 
    Pin 2 = GND (Data / V-; Black)              6   7   8
    Pin 3 = ALARM (Blue)        
    Pin 4 = RxD (Brown)                        3    4     5   (pin 5 is the odd man out)
    Pin 5 = TxD (White)                                      
    Pin 6 = N/C  (red/blac                       1     2


 Pin 4 RxD (Brown) = Receive NMEA     ----------       3 = Transmit (TxD-)
 Pin 2 GND (Red)   = Ground           ----------       4 = Signal GND
 Pin 5 TxD (White) = Transmit NMEA    ----------       5 = Receive (RxD-)
                                                      [leave all others unconnected, especially Pin 8]   




Copyright (C) 1998 by Global Mapping Systems and Karen Nakamura. All rights reserved.
http://www.gpsy.com/cables/garmin75.txt