[s-cars] Radio Code for Concert I - really necessary, or overrated?

[McCall, Randy]

Speakin' of radio codes, I've been meaning to ask is anyone else with a
Concert 1 and phatbox conversion ever has the kind of behaviour my
system exhibits; turn it on, works great for about 1 hour, at which time
it turns itself off.  Lights stay on, but nobody home...  As a reminder
that you've been driving for an hour, its a great feature.  If you're
right at that critical moment in a new story, crescendo moment of a
momentous song, not so good.

Cycle the Concert I HU on/off with a few seconds rest and all is well
again for about another hour; repeat behaviour.  I'm thinking it might
be the lack of security code (HU bought used, no code, none needed to
turn it on), but then again, I don't have much detail about the Concert
I decks.

Anyone want to chime in with actual knowledge?  Btw, in my case, I did
not need to modify the underhood radio relay as the write up for
Phat-box suggests may be necessary if that makes any difference.

Thanks

-Randy

'95.5 S6A mit phatty-rock