For those with a Garmin (example Nuvi 1690) that have no integrated FM receiver/receiver in the power cable and with a USB connector a terrific way to hardwire your Garmin is with a Garmon Direct Wire Cable by Gilsson. Part#GUSB5V-B - . This cable can be had for about $24 and can be purchased from various vendors to include eBAY vendors. Very easy to install. On the 370Z it is easily to tap into the cigarette lighter on the passenger side.
