sorry to hear about your trouble..
i just got back from a 600 mile roadtrip and everything worked perfectly..
-- my passengers were able to watch movies with the 1280 activated..
-- i was able to navigate and listen to my iPod (connected via the 1417) with the 1280 deactivated..
-- my CAN signals (ignition and illumination) worked without issue..
i went camping and had to travel on several miles of bumpy dirt roads..
i did not allow my passengers watch the movie while i was refueling, in fear of the gas gauge not reading accurately.. i still need to experiment to see if i can repeat the problem..
i wish i had more to say, but mine worked fine for several months, then did not work after switching units a few times, now it seems to be working fine..
i will continue to experiment and post any findings..
good luck..
i just got back from a 600 mile roadtrip and everything worked perfectly..
-- my passengers were able to watch movies with the 1280 activated..
-- i was able to navigate and listen to my iPod (connected via the 1417) with the 1280 deactivated..
-- my CAN signals (ignition and illumination) worked without issue..
i went camping and had to travel on several miles of bumpy dirt roads..
i did not allow my passengers watch the movie while i was refueling, in fear of the gas gauge not reading accurately.. i still need to experiment to see if i can repeat the problem..
i wish i had more to say, but mine worked fine for several months, then did not work after switching units a few times, now it seems to be working fine..
i will continue to experiment and post any findings..
good luck..