• The car I've borrowed has a non-working stereo. No idea if it's the head unit or something else. How easy would it be for me to diagnose/fix this as someone who has no idea of car electrics? It's a 52 plate punto so I imagine shouldn't be too complex

  • First check the wiring is all connected (you might need specific removal tools to get the stereo out of the dash - a penknife might suffice)
    If it looks all connected securely, try fitting a new fuse.

  • Cheers. I assume you need some form of 12V power supply to test the head unit. Although I've just found my multimeter isn't in the toolbox where I thought it was so this could be a non-starter.

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