Digital Display Not Turning Off (clock, Temp, Mpg)

[mk1yaris10]

After installing a new stereo into my 2002 yaris, I realized that when the key had been removed and the ignition had been turned off, the digital display displaying the time, temperature and mpg was staying on.

Any suggestions on how to fix this?

[MEP's Yaris GS]

Sounds like its back feeding from the constant live feed back to the switched live feed, it'll be worth checking there isn't an inline 'jumper' lead that needs disconnecting, as this will only be needed if there isn't an ignition switched live feed on the vehicle (such as on Fiat's etc).