Navigation Installations; especially Eclipse

[Lucci]

I went out to start the H3 Sat morning and everything was dead! The dealer had to flat tow it away. They called today to say that the Navigation system killed it and will keep killing it. They charged the battery and tested the system. Said normal draw with vehicle off is 8-9mA; that all was fine, then out of no where the draw would jump another 25mA for 20 minutes or more and it would do this repeatedly until dead. I usually drive the thing only on weekends so they told me it would be dead everyweekend if something isn't found in the Navigation unit; that they did isolate it to the unit. Anyone else experience anything like this or any suggestions? I have an appointment with the installer on Friday, but he did not sound encouraging!