when using Garmin's genuine car adapter
(5VDC 1A) the device can be used
to navigate whilst charging.
using a different one or a DIY (same specifications as above) -
the device turns into PC connection mode and remains there
(data wires green & white not connected).
I suppose Garmin's car power supply is either
using the data cable somehow too or the output is
different (cannot measure because the case is glued).
You have to navigate to get to the good.
[Only registered and activated users can see links. ] Password for my files: gpspower.net
Please don't flood my pm box with questions you can post on forum!! You won't hear back from me.
Galaxy S5 Kitkat 4.4.2 / Nuvi1200->1250 / Nuvi3790T->34xx / Nuvi 2200 / Nuvi 66 / Oregon 600