Join Date: Jul 2010
Location: Birmingham, Al.
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The first USB we had for the 2011 when new, we were directed to leave the car idle, as using a battery charger would allow possible AC hum into system while programing, it was better to leave the car' charging keep the power maintained..
The number they want is your "DEVICE" number, starts with "540" typically if I remember correctly.. find in the system info at bottom I think it is along withthe softare version related stuff.. I have pics of random screens, lazy to go get them right now.
When they get the device number, they will provide the authorization code for you to enter, and proceed..
Here's my take on the whole voltage thing:
When the engine is running the "radio" sees almost 14 volts. When under battery power it will see from just a tad over 12 to maybe 11.7 or 8 after a while. How about we use something like an old-school Radio Shack 13.8 volt DC regulated power supply? The kind they sold for home CB radio set-ups. They are rated at 5 amps continuous and have very little ripple or hum. Might be worth a try?
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