Dash,hvac dont light up with headlights
 

I have a problem where the lights in the interior dont light up when I turn on my head lights, taillights work. While installing my boost gauge I think my friend fried something. Checked the fuses and I took out the relay for illumination/taillights and switched it with the rear defogger and the lights still dont come on. They dont dim or anything. Ive tired searching and Ive seen people talk about illumination control unit or modual but I have no idea if and where it exist. Anyone have any ideas?

Did you undo whatever you did with the boost guage?

I think it pretty much has to be fuse 12 or 13 on an Impreza... Every illumination line goes through one of tehm. If it isn't, you fried/cut/broke one of those leads somewhere...

Sell it and buy another FC, you know you want to.