[Hondaracer]

Are they light switches or outlets beside the window?

If they are outlets you could just meret a jumper and install a new box where you want the light fixture and run the 120v from the existing box to the new light.

If you wanted to really half ass it you could even just drill a hole and fish the wire itself from the existing box and just tuck it behind the fixture lol.. presumably though that fixture has some sort of mounting box no?