[. . . ] QUICK START GUIDE GPS 35 PC The GARMIN GPS 35 PC is designed for easy installation and initialization. [. . . ] Electrical Connections Your GPS 35 PC features a standard DB-9 serial connector and cigarette lighter plug for connection to your PC serial data port and 12 volt DC power source. Plug the cigarette lighter plug into a 12 vDC receptacle, and connect the 9-pin D connector to the serial port of your PC. Note that the cigarette lighter plug has a user-replaceable in-line fuse to protect the GPS. The DB-9 connector uses the following pin-out format: PIN 2: Data Transmit PIN 3: Data Receive PIN 5: Signal Ground Initialization Once you apply the correct power to the GPS for first-time use, it will begin searching for satellites in AutoLocateTM mode. This process will initialize the receiver, and should compute your position in no more than 5 minutes. After the GPS has been initialized, you will usually acquire a fix within a minute. [. . . ] GARMIN (Europe) LTD, Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, S051 9AQ, U. K. [. . . ]