I can't imagine that the radio doesn't have a constant power source for when it is turned off. For some reason that constant power is being interrupted when starting or the feed isn't live to begin with. Check a manual to find which write provides the constant power and check backwards.
Gypsy Tour '14. - PA Route 6 and so much more.
I'd check fowards , it's easier to see.
2010 FLTRX , Stage 1, 13" Madstad, Mono tubes, SuperShox, Heritage style bars. Alpine CDE-HD149BT,Soundstream Picasso Nano Series PN4.520 , 5X7 and 6.5 Infinity Kappa speakers
If I have to explain ,you wouldn't under stand anyway.