Need help with 2 radio wires

[felga]

Hi
I wanted to connect the radio and found "+" (permanent- green red), "-" black , and two yellow and yellow red wires connected together, there is no voltage in them. T tested with multimeter and they act like "-" , just wondering maybe they aren`t original cables ?

http://img714.imageshack.us/img714/8243/radioy.jpg

Andy

[Eklipze3k]

It's probably a switched live, only comes on with the ignition to stop the radio draining the battery.

[felga]

Yes but with ignition on or not they dont make 12v when connected to black "-"

[ChrisRLewis]

Can you trace the leads back? perhaps it's the speakers earth connections?

[Pete126]

Turn on the side lights and you should get 12volts, It's the illumination wire for the Radio.

[ChrisRLewis]

according to the workshop diagram
Red+Green is the +
Black is the - (is that the black cable snipped off in the background of your photo?)