Re: Headunit turns on and off while driving
Definitely sounds like bad ground and possibly dirty power source. Why I mean by dirty power is a wire that has hum, noise or intermittent connection. Sometimes it will throw the computer for a loop and make all kinds of errors, shutting off, etc. Start with the ground first. if that doesn't help, use a new power wire from the battery or known clean accessory feed.
'65 VW Bus
(2) PG Ti 12's, (2) Aura Sound 8's, (2) SoundStream 6.5 coax, (2) Alpine Type-S 6x9's [rear fill], MBQ DSC1500.1D, RF 501X
'02 BMW 330xi (AWD coupe)
Harman/Kardon 12-speaker System Option - sounds good =)