New Sony head unit - botched wiring...
I've bought a Sony M8800, which falls into Phase 1 of my Carputer project (see This Thread: I'm new, I know what I want, help me! for the background).
I've had a bit of a botch with the installation of the head unit....
Having pulled out the factory head unit, I plugged in the ISO harness (included with the Sony) and then connected the harness to the Sony (= easy)
It worked fine for a couple of minutes (I hadn't secured it in the DIN slot at this point, just resting on my lap).... While testing a CD, I must have tugged on the harness a little too much and I saw a spark inside the DIN slot - I'm not sure where it came from, but the new head unit went night-night.
Since then, I tried the original Golf head unit, it powers up fine. It's asking for the 'SAFE' code. I'll have to contact VW for it, but this is not a problem.
I've connected the new Sony head unit in my other car (Audi A4). It already has a Sony head unit, so swapping the units was easy. The new Sony works fine in the other car - so it doesn't seem to be damaged (tested the new ISO harness as well, it checks out fine).
This narrows down the fault to the wiring loom in the Golf (unless someone tells me otherwise?).
I retried the new Sony head unit in the Golf and nothing had changed (why would it have?...). I then swapped over the red/yellow connections to change from switched to continuous power supply. The lights still don't come on, but I can now open and close the motorised face panel.
This means that its getting power, but something is still wrong....
Is it shorting somewhere or maybe fuse(s)?