The CD changer wiring has a permanent live connection but as far as I’m aware there’s no ACC switched live in the boot area.
On the similar device I bought the two fly leads could be coupled together to power the device permanently. I ended up returning It to the eBay seller because it never powered down and drained the battery. Some devices such as the Grom unit seem able to work properly without a switched live, presumably because the have a proper sleep mode.