Vito W369 Replacing radio issues

[seanrourke592]

Hi All. I have a 2006 vito witha dodgy radio. i have bought me a cheap chinese multifunction unit which looks like it should just plug in. However when I connect it up it has power but when i switch on the ignitio it goes off. looking at the plug (A) that goes in the back of the radio there is constant power on pin 4 (yellow) which i asume is for memory but no power on pin 7 even when the ignition is on. would that explain it? am i making sense? but then why does the radio work when the ignition is off?

 

[Marku]

The radio is supposed work with the ignition off but time out. The ignition will switch the radio on and off. Least that's how the Viano works. Will the ignition switch the radio off? If not then that connection is your problem.