I use the side connector on the Nuvi-350 with the only modification being that I cut open the cord and jumped the red wire around the "bump" in the cord.
It powers up the Nuvi fine that way - but don't get the serial fmi input unless I then unplug and plug the nine pin serial from the OT2M. After that I will see the Nuvi display the FMI lock. It is a minor hassle but since the OT2M is accessible in my car I have just done that instead of figuring out why that works. I have thought about experimenting to see if breaking a certain wire with a switch would do the same thing but haven't tried it yet. Larry WT9M --- In [email protected], "gsdatplace" <sp...@...> wrote: > > I should do a better writeup and diagram of the mod I did, but the album is > at: > http://groups.yahoo.com/group/tracker2/photos/album/1743631459/pic/list > basically, the middle two connections on the rear jack are not passed through > the standard "mount" I opened the mount, and tied the usb+ and usb- lines > across the circuit board as detailed in the image DSCF0840. > on the inside of the nuvi, those lines (I used red and black) tie to the side > usb connections usb+ and usb- points, on my board they were test points > marked USBDP and USBDM (guessing its for USB Data Plus and Minus). > I added a microswitch to the bottom of the nuvi where the mount lip grabs it, > so when in the mount the switch is closed, which puts a 8.2K (I believe) in > series using the yellow and white wires in my picture between the shell > (ground) and the USBID test point which makes it think the data cable is > plugged in the side. I also used a portion of black electrical tape to cover > the middle two connection pads on the nuvi board where the rear connections > would have made contact to keep it from going insane. The other mod needed is > to discect the "blob" in the data cable and tie the red wire across to power > the nuvi up as well. > > It works perfectly EXCEPT if you try to plug the modified data cable into the > side port alone. It seems that the nuvi getting 5V in via the side plug > disables its data mode, as it would normally send power out to the serial > converter to power it. > > "One of these days when I get a chance" (shh James, I know I'm beginning to > sound like someone else) I'll get around to finishing up that writeup lol, > but I think i've detailed it here a few times enough to make it > understandable. > > Garrett Sloan > VE6RKY > > --- In [email protected], James Ewen <ve6srv@> wrote: > > > > On Tue, Mar 16, 2010 at 1:35 PM, Keith VE7GDH <ve7gdh@> wrote: > > > > > I seem to recall that some solutions > > > involved a pushbutton or reed switch to tell the Nuvi it was in the > > > cradle or something like that. If you search the archives and look > > > in the files area (Yahoo) you should find some more info on this. > > > > Dig into the search using VE6RKY as a term... Garrett modified his for > > one wire with a little miniature push button added to allow it to > > sense the cradle. > > > > James > > VE6SRV > > >
