You know what, I bet this is for the delayed power shut off to the radio on some vehicles....My 2005 Chrysler T&C has this deal where after you shut off the ignition, the radio will play for about 1 min before the pwr shuts off, or until you open a door.

From the reviews on it, it appears that may be what this device is intended for.

 

I just had to pull my stereo out today to check out a possible loose connection. Turns out it's the plug in RCA connector. But anyways, the Wally world connector only has the one harness which has speaker wires and one solid power output. No remote, ACC or Ground wires. I had to splice for ignition power(left cig. lighter Pink/yel)(or under dash pink/white) and ground the wires with a self tapper.
You'll need an antenna adapter too regardless if you buy a Canbus adapter or do it yourself.