• Connect the pocket tester (DC 20 V) to
the tail/brake light couplers.
Tester (+) lead Yellow1 lead terminal
①
Tester (–) lead Black lead terminal ②
• Turn the main switch to “ON”.
• Turn the light switch to“ ” or “ ”.
• Check the voltage (12 V) of the “Blue”
lead on the bulb socket connector.
The wiring circuit from the main switch to
the
bulb socket connector is faulty, repair it.