[quote pid=3264 author=jonboy date=1218646772]you need not do a thing to the std iso block. on the loom supplied with the stereo, you will need to swap the red wire and the yellow wire around. if the car has speaker in it (lift the speaker covers up and see, then there should be another iso block behind the dash with speaker wires on it, its probably just fallen off the back of the blank panel)[/quote]
Thanks for the reply jonboy,
I dont have speakers so sadly there is no wires for them. But I have no problem wiring them in myself.
I just want to get power to the headunit for a start!
I tested the wires with a multimeter and yes there is a 12v supply. Yet when plugged in it doesnt work. Tried a couple of different head units too just to make sure the one headunit I tried was working!
I thought I might have to change a few wires as on one of the CD headunits I want to put in there is a sticker that says
''If installing into a VW, Audi, please refer to the manual''
Sadly I dont have the manual anymore.....
So I need to swap the yellow and red wires on the back of the headunit? Could you explain a little more about how this works?