UKPassats

Afternoon all,

I treated myself to a new head unit for Christmas. All was going well with the install, all plugged in ready to go and no power

I had a look at the harness that was sold to me that bridges between the car connectors and the head unit connection. It seemed to be missing some pins. I took it back to the shop and I've been told it's the right one but I have to wire in a power supply from the fuse box? Anyone be able to explain in lamens terms how I do this?

Thanks

Pete