Hi, I brought a XC90 over a year ago. And it’s been great. Top mount went and I’ve rebuilt the cim. But other than that. All good. I noticed the radio only had one bulb illuminated so I decided to change them. Brought replacements and fitted. It was a very bright day so I couldn’t see the illumination. Left it till the even to see my handy work. Only to find the lights were flashing. So I turned it all off ready to look at it the next day. Next day turned it on and no radio at all. No reverse bleeps etc. Checked all fuses. Checked power. Only 12 constant there. Assuming it works via can. I took the plunge and brought another genuine radio. For parts and or to see if that one would power on. I didn’t expect it to work fully but show some sign of life. Nothing. I’m at a loss now. Has anyone got ideas or the correct wiring diagrams as there are so many wrong ones. Thank you