Sequential tail lights 66 only 2/3 light up

[David Flores]

Hey I got a 66 Thunderbird the sequential tail lights work in a sense where only the first two inner lights go off and the very last third light never finish the sequence so I've got sequential tail lights that only go 1,2 instead of 1,2,3 on both sides any advice on how I could go about fixing this and where to start I've only had my T-bird for about a year where can I find the mechanism for the sequential tail lights please help thanks

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[Azfamily]

Hey I got a 66 Thunderbird the sequential tail lights work in a sense where only the first two inner lights go off and the very last third light never finish the sequence so I've got sequential tail lights that only go 1,2 instead of 1,2,3 on both sides any advice on how I could go about fixing this and where to start I've only had my T-bird for about a year where can I find the mechanism for the sequential tail lights please help thanks

The sequential mech. Is behind the rear seat, make all the bulbs are working, including the front and turn signals on the front fenders are working. Check these and the flashers before checking the sequential motor. Best of luck