I may have found a possible issue with the power cords on the new Zumo XT's.
Garmin moved the power transformer ( 12 volts to 5 volts ) to the hardwired power cord. It is a small black box. The black box may not be waterproof as I found on two rides that after riding in heavy rain the Zumo XT would switch between hardwire powered and internal battery powered.
On my last ride I waterproofed the black box power transformer and the issue of switching between hardwired powered and internal battery power did not happen.
I will keep monitoring.
Garmin moved the power transformer ( 12 volts to 5 volts ) to the hardwired power cord. It is a small black box. The black box may not be waterproof as I found on two rides that after riding in heavy rain the Zumo XT would switch between hardwire powered and internal battery powered.
On my last ride I waterproofed the black box power transformer and the issue of switching between hardwired powered and internal battery power did not happen.
I will keep monitoring.
Would you mind elaborating on what you did to waterproof the 12V-5V converter box on the power cord. I'm thinking shrink wrap, but with that being a very permanent waterproof, it would prevent you from accessing the box in the future.
Thanks.