just figured this out by ear, the song is mainly this riff repeated with some slight variations e|---------------------------------------------------------------------------| B|---------------------------------------------------------------------------| G|---------------------7-----------------------------------------------------| D|-5-5-5-4-4----77777--7-----------------------------------------------------| A|-5-5-5-5-5----77777--5-----------------------------------------------------| E|-3-3-3-3-3----55555--------------------------------------------------------| peas. sandwichez.
https://primanota.net/misc-unsigned-bands/japandroids-young-hearts-spark-fires-chords.htm