V40 immobiliser , fuse problems

Hey guys,
I purchased a 99 v40 wagon for a work wagon. I’ve then tried to update the radio and install an aftermarket one. After unplugging old harness from radio I’ve cut the cords and wired in the new plug and play for the new headunit , put my key in dash and now radio has no power, interior lights don’t work and my immobiliser light is on the dash , fixes ? Advice please
 
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