I tried the sena supplied usb power lead but it didnt sit nicely in my USB adapter so i switched to the ciggy plug that came with the unit
as far as power supply goes i run a common bus line through a fused solenoid triggered from the ignition via a handlebar mounted switch block so fuse yes / block no
now ive put some jibbers back in the battery ill have another go
its just a matter of trial and error
ive tried the instructions and failed so now its good old fashioned make it us as you go alongness
what could go wrong
Bill I got the patch lead sorted thanks all the same
ive got an overnighter to pemberton this weekend so if it doesnt play on bike power ill take brocks lead and just run it off its own battery
Thanks to brian, dale, brock, bill and all the sound advice on what should be an easy install
i figure we'll either sort it or it will drive me nuts