Joe,
would the restore function on the updated DCS have done the same? Does restore work the same?
No, they are two completely different things. You swapped in a new engine sound file, the Restore function replaces the contents of the DCS Remote.
how do I power up the TIU using the auxillary power port, would the battery recharger do it
You need to use a 1-1.5 amp AC or DC power supply. The battery charger won't do it.
This and a whole lot more is all in "The DCS O Gauge Companion 2nd Edition", now available for purchase as an eBook or a printed book from MTH's web store site! Click on the link below to go to MTH's web page for the book!