Next ISSUESYou
must supply the phone with plug in power ongoing as you are running the screen full bright, have all the power savings features and all the time outs turned off and you are reading GPS satellites continuously --
all of this is much more than the battery can support. Without constant input power you aren't going to go very far.
ISSUE becomes the sorry little plug socket in the bottom of the phone not being able to stay connected properly due to all the vibration and wind whipping on the cable, etc.
What happens is you get it plugged up and everything seems good, but go down the road a bit and suddenly the screen goes dead because the plug vibrated a bit so one of the little pins isn't making contact like is should and the battery got sucked dry.
I need to think on this a bit because this one may be a "can't get over it" issue. If the USB jack itself isn't going to take the vibration, etc then this whole idea is a no-show.
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NEW knowledge -- electronics style glass barrel fuses (inside the cable that connects the USB mount to the battery) cannot stand vibration under load all that well, the warmed up solder strip style conductor
fractures due to the vibration.
Go to the auto parts store and get a "GERMAN style" ceramic body with copper folded over the ends style fuse --- these puppies are vibration proof. Your bike is fused for 20 amps, so if you are soldering into your regular system at some point your USB should be fused at no more than 16 amps so that one is the one that blows first.
Me, I went directly to the battery as I got me a combo jack with a USB and a cigarette lighter socket (run an emergency air pump if needed) so I fused big enough to support the air pump running through the cigarette lighter jack. 25 amps -- a bit
bigger than the electrical system on the Savage uses. But since I don't touch the rest of the system and place no loads on the rest of the system other than directly to the battery, so my 25 amps is appropriate for the cigarette lighter jack and some of the things you might plug into it.
A
brand new USB cable has much better "click into place and stay there" retention action than the first USB cable I was using, so with this trick a spare fresh cable in the saddle bag may be what it takes to keep the trick working when you are out in the mountains.
This evening we ride to see what we shall see ..... will she or won't she?