98 v6 ex at 80k mi

i dont have my car here at school with me... but my parents took the car out for a spin, and now whenever they start the car, all the dash lights (the ones that turn on, and turn off after the car starts) stay on after cranking the engine and letting it run.

Im 90% sure its the alternator... but ive searched, and only read of the lights sporadically flickering on and off when its at the end of its life.... not constantly staying on h:


just wanted to make sure before i have my parents replace it.