Buy Ford Fusion Parking, Corner, Side Marker, Signal Light

The Ford Fusion's turn-signal light-also called a blinker, indicator lamp, or signal bulb-does three big jobs: it shows other drivers where you're headed, keeps the car road-legal under federal rules, and warns you when a bulb has burned out (fast-flash).

Quick Facts

• First-gen Fusion (2006-2012) uses wedge-base 3156/3157 or 7440/7443 bulbs at the corners (SEALIGHT).
• Second-gen (2013-2020) keeps 7443 for most front turn signals and 7440/7443 in back (Boslla).
• Mirror-mounted arrow lamps appear on many SE, Titanium and higher trims starting in 2013. Sequencing LED upgrades are popular drop-ins (Reddit).
• Fast-blinking (hyperflash) almost always means a burned-out bulb or an LED installed without a resistor (CarCareKiosk) (Reddit).
• U.S. law (FMVSS 108) says fronts must flash amber or white; rears may be amber or red and must be bright enough from 100 ft in normal daylight (eCFR).
• Monthly light checks are a core AAA maintenance item because a dark indicator can earn a ticket (Your AAA Network) (AAA).

Fit & Years

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Bulb Choices

• Halogen (OEM-style) - Cheap, easy to find, lasts 1-2 years.
• LED replacements - Last up to 10 years, light instantly, but need load resistors or an "LED-rated" relay to stop hyperflash (Reddit).
• Sequential mirror modules - Swap the whole mirror insert for a flowing amber bar; look for versions made for the North-American Fusion body so fitment is correct (Reddit).

Common Problems

1. Rapid blink / dash warning - System senses low resistance or open circuit; check for a blown bulb or missing resistor (YOUCANIC).
2. Moisture in lens - Cracked seal lets water enter; replace housing and check gasket.
3. Loose socket - Vibration loosens contacts; gently bend tabs or replace socket.
4. Stalk won't self-cancel - Steering-column switch wears; swap the combination switch in under 30 minutes with basic tools (YOUCANIC).

DIY Replacement

Front corner (2014 shown)

1. Turn wheel inward for room and pull back fender liner (CarCareKiosk).
2. Twist socket counter-clockwise; remove bulb.
3. Push new 7443 bulb straight in; avoid touching the glass.
4. Test before re-assembling liner.

Rear trunk lamp (2014 shown)

1. Open trunk; remove two plastic wing-nuts and lift the carpeted trim (CarCareKiosk).
2. Twist out socket, change bulb, re-install.

Mirror indicator
Pop the mirror cap, release two tabs, unplug the module, and slide in the LED unit (YouTube).

Tip: Replace bulbs in pairs so brightness matches (AAA Oregon/Idaho).

Safety & Law

• FMVSS 108 requires a pilot light or clicking sound so drivers know the signals are on (eCFR).
• Signals must flash 60-120 times per minute; hyperflash exceeds that rate and is illegal.
• Front indicators must be at least 380 mm above the road and as far apart as practical on cars this width .

Maintenance Tips

• Check every bulb once a month with a friend or by using reflections on a wall (Your AAA Network).
• Keep spare 7443 and 3157 bulbs in the glove box for roadside fixes.
• Clean cloudy lenses with plastic polish to restore brightness and signal clarity.
• When one bulb fails, its mate is often close behind-replace both (AAA Oregon/Idaho).

Troubleshooting

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Upgrade Ideas

• Switch-back LEDs - White daytime running light that turns amber when signaling; fits 7443 sockets.
• CAN-bus LEDs - Built-in resistors prevent hyperflash and "bulb-out" dash alerts (AUXITO).
• Sequential mirror bars - Flowing arrow animation improves side visibility and style (Reddit).

Frequently Asked Questions

Q: What bulb size does a 2010 Fusion use up front?
A: Most 2010 models take a 3157 or 7443 wedge-base bulb in the front corner socket (SEALIGHT).

Q: Why is my indicator blinking super-fast after I installed LEDs?
A: LEDs draw very little power, so the flasher thinks a bulb is out. Add an inline 6-ohm resistor or install an LED-rated relay (Reddit).

Q: Where is the flasher relay on a 2011 Fusion?
A: It is integrated into the body-control module; access the passenger-side fuse panel to swap it if needed (Ford Fusion Forum).

Q: Are mirror turn signals plug-and-play?
A: Factory LED modules are plug-in. Some aftermarket sequential bars need extra trimming or wiring, so buy ones listed for the U.S. Fusion, not the overseas Mondeo (Reddit).

Q: Can I run red rear blinkers?
A: Yes-FMVSS 108 allows either red or amber at the rear, but fronts must stay amber or white (eCFR).

Q: How long do halogen bulbs last?
A: Typical service life is about two years under normal use (Your AAA Network).

Q: Does a fast blinker always mean a bad bulb?
A: Almost always, but it can also point to a corroded ground or damaged socket-inspect before replacing parts (CarCareKiosk).

Q: My dash shows a bulb warning icon-what is it?
A: The Fusion has a light-out indicator that comes on when any exterior bulb, including a turn signal, burns out (YOUCANIC).

Q: Is LED brighter than stock?
A: Quality LEDs can emit up to twice the lumens of a stock incandescent while using a tenth of the power (AUXITO).

Q: How often should I check my blinkers?
A: AAA suggests a quick walk-around once a month and before long trips (AAA).

Key Takeaways

• Know your bulb size (3157/7443).
• Replace in pairs, test before you drive.
• Use resistors with LED swaps.
• Keep signals clean, dry, and bright to stay legal and safe.