Something’s broken on the Fiat again. Here’s Your hint:

EDIT: AuthiCooper1300 got it. Light switch is in the ON position, but I get nothing but the headlights. No Taillights, backlight or ‘lights light’ on the dash. Pulling out the switch and reinserting it in the connector fixes it, so it’s probably a wonky connection. I’ll drown it in contact cleaner when I find it and see if that helps.

Here’s how the dash should look: