Upgraded the stereo on the America to a 300w Uniq system. Wired up and fitted-plugged samsung s2 phone in and goes really well. However as soon as I plugged the charger from 12v supply to phone got heavy static. Engine switched off.
Supplier suggests a ground loop isolater whcih I have ordered but fail to see what this will do. Power to amp and 12v supply run direct to battery and same length so the pd for voltage drop would be next to nothing. I have made up a loom which has the power supply for both in it- all connections are soldered and heat shrink. Is it possible that magnetic induction between the two could cause this? Thought I would ask before pulling it all apart again and making up seperate wiring looms. I suspect that the frequency that the charger works on is the problem but no doubt there are far more knowlegeable riders out there with electronic backgounds. I seen a post from a honda rider with the same issue who tried a apple phone and charger and the problem disappeared. Can use running off phone but on long trips the battery will give up the ghost fairly quickly.