Honda CBR125R Owner's Manual page 415

Connect an ohmmeter to the main relay connector
terminals.
CONNECTION: Red – Red
Connect a 12 V battery to the following main relay
connector terminals.
CONNECTION: Green – Black
There should be continuity only when 12 V battery
is connected.
If there is no continuity only when the 12 V battery
is connected, replace the main relay.
LIGHTS/METERS/SWITCHES
MAIN RELAY
Bl
G
R
R
19-23