Replace the turn signal/position light bulb, socket or both.
»Connect the pocket tester (DC 20 V) to the tail/brake light coupler (wire harness side) as shown.
Positive tester probe ^ blue ® Negative tester probe ^ black Q
»Turn the main switch to "ON". »Measure the voltage (DC 12 V) of blue (2) on the tail/brake light coupler (wire harness side).
»Is the voltage within specification?
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