I have just bought myself a new car... L reg fiesta (not great i know, but in better condition than my banged up old metro!)
I am trying to swap the stereo into the new car, it is a Sony MD player. Problems is i can't get any power to the unit. The block from the car has been cut off so i have to bind the wires into the block from the unit instead.
The unit requires a 12v supply and i have verified with a mutimeter that this is available and carried properly to the unit, but i can't get any power.

The car is negative earthed so it is a +12v supply, but still not getting anything. The unit is definately working fine unless it has died in the 10minutes of being between cars.
Can anyone offer any advice because i want my stereo back

If not can anyone give me an idea of cost of having it done professionally? or anyone in the swansea area that can do it??
MB