Head Lamp Relay / Front Lamp Relay

Disconnect the negative (-) battery terminal.
Pull out the relay from the engine compartment relay box.
1. Head lamp (Low) relay
2. Head lamp (High) relay
3. Front fog lamp relay
  
  Fig 1: Identifying Head Lamp Low/High Relays & Fog Lamp Relay
  Courtesy of KIA MOTORS AMERICA, INC.
Check for continuity between terminals. There should be continuity between the No. 87 and No. 30 terminals when power and ground are connected to the No. 86 and No. 85 terminals.
There should be no continuity between the No. 87 and No. 30 terminals when power is disconnected.

Fig 2: Terminals Continuity Chart
Courtesy of KIA MOTORS AMERICA, INC.