The Kia Soul EV uses the H7 bulb for both high beam and low beam headlights across the 2015-2019 model years.
The H7 is a single-filament halogen bulb, meaning each unit serves only one lighting function, which is why the Soul EV requires separate H7 bulbs for the high beam and low beam positions.
H7 bulbs operate at 12 volts and consume 55 watts, placing them in the standard halogen power range for automotive headlight applications.
The H7 uses a PX26d base, a two-pin connector with a plastic retaining collar. This base type is not interchangeable with other common automotive bases such as H4 or H11.
The H7 is an ECE-standard bulb, meaning it conforms to the Economic Commission for Europe lighting regulations used across Europe and many other markets worldwide. It also carries approval for use in the United States and Japan.
Because both the high beam and low beam positions share the same H7 specification across all listed model years, a single bulb type covers all four headlight positions on the vehicle.