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GT Concepts - Sequential Tail Lights & Accessories for Your Mustang
GT Concepts - Sequential Tail Lights & Accessories for Your Mustang
Sequential Tail Lights & Accessories

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Sequential Turn Signal Troubleshooting Guide

'99-'04 Mustang

Erratic, intermittent, inoperative or out of sequence turn signal operation.

This is a common problem most likely caused by dirty contacts in the hazard flasher switch. Over the years - dust, moisture and grease settles into the switch.

Spray the area under the hazard flasher button with WD40 or equivalent, apply liberally with a long spray tube while operating the switch several times.

'05-'06 Mustang

Turn signals flash out of sequence, middle lamps flashes last.

In some instances the middle and outer lamp sockets were installed reversed from the factory.

Swap the middle and outer lamp sockets in the tail light housing.

'05-'06 Mustang

Turn signals flash erratic at first then stop working.

If the computer senses a 'lamp out' condition it will disconnect power from the lamps until the lamp is replaced or the problem is corrected.

Push the terminal further into the socket, sometimes extra force is required. You can also try removing the terminal then re-inserting it at a slight angle.

Tail Light Sequencers For 1996 - 2008 Mustang

2005-2008 Plug-n-Play Harness

2005-2006 Plug-n-Play Conversion

1996-2004 Conversion Kit

1996-2004 Plug-n-Play Harness

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Sequential tail lights and accessories for 1999-'08 Ford Mustang, advanced plug-n-play design, quick easy installation.
GT Concepts is not affiliated with Ford Motor Company. Mustang, Mach 1, Shelby, Cobra, the Mustang Running Pony
and Cobra Snake are registered trademarks of Ford Motor Company and are used solely for reference purposes.

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