Easy to follow step by step guide on how to replace an automotive turn signal (blinker) bulb, though appearances may vary, the process is similar on most vehicles.
Difficulty Level - 3 of 10
Tools and Supplies Needed
Begin with the vehicle on level ground in park with the emergency brake set, engine "OFF", wear protective eyewear and gloves.
Step 1 - Identify the turn signal light (blinker) that has failed, insect both front and rear bulb operation.
Step 2 - Gain access to the rear of the lens by opening an access door
or removing a few screws to remove the panel.
Step 3 - Release the wiring connector from the bulb housing. (Note: Some
vehicles are designed with bulb socket attached, in this case turn the socket counterclockwise
to remove.)
Step 4 - Grasp and turn the release fastener and pull the bulb housing
plate from the lens.
Step 5 - Once loose, gently remove the bulb mounting plate which will
expose the various bulbs including the turn signal.
Step 6 - Identify the failed blinker bulb, this failure is sometimes accompanied
by a darkish color inside the bulb glass.
Step 7 - While holding the plate down, gently grasp the failed bulb
and twist counterclockwise while pushing down slightly, then pull up to remove.
Step 8 - Once the bulb has been removed, inspect the bulb and socket for
corrosion or damage.
Step 9 - Occasional a bulb electrical contact can become overheated and
burnt due a to high resistance of a poor connection, this will hinder the new bulb
operation.
Step 10 - Using a sharp tool such as an Exacto blade, clean the contact
by scraping the terminal to expose new metal.
Step 11 - Match the new bulb to the old unit, they should match identically.
Step 12 - Its important that the bulb terminals are the same. (Some bulbs
are designed with two terminals which can cause operational problems if installed.)
Step 13 - Once the socket has been cleaned thoroughly, gently install
the new bulb by inserting it and twisting clockwise. (Do not over tighten.)
Step 14 - After inspecting all bulbs in the mounting plate the new bulb
is ready to be reinserted into the lens.
Step 15 - Reconnect the wiring harness connector to the blinker bulb mounting
plate.
Step 16 - Turn the ignition switch "ON" while engaging the blinker lever
to operate the bulb to ensure the repair is done correctly.
Step 17 - Carefully reinsert the bulb plate onto the lens.
Step 18 - Work the plate into place while twisting the bulb plate fastener
clockwise. (Do not over tighten.)