- Last seen
- Joined
- May 16, 2019
- Thunderbird Year
- 1971
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No LED bulb will work with the factory sequencer or flasher can. The voltage is a lot lower than the original incandescent bulbs. The flasher can was specially designed for the sequencer and original bulbs used. They will either flash in sequence VERY quickly or not at all (usually just a flat all three blink no longer in sequence), as the voltage is different. In order to use LED blubs you need to change the flasher can behind your glovebox and sequencer in the trunk. (Thats how it is on my 69). And honestly it's not a hard upgrade. If you want to know about it I did the modern flasher/sequencer/plasma LED bulb upgrade. It's really nice and bright. Also used a lot less power and doesn't heat up like incandescent bulbs do.Which LED bulbs can I use on my 71, without having to change out the sequencer?
There are many LED bulbs that are not compatible with your sequential system.Which LED bulbs can I use on my 71, without having to change out the sequencer?
Which LED bulbs can I use on my 71, without having to change out the sequencer?
The stock sequencer and flasher can was designed for incandescent bulbs. There is a conversion kit that replaces the original sequencer (in your trunk), and the flasher can (behind the glove box) which allows you to use led bulbs. Trust me I know this because I have that very system in my 69 tbird right now. Trying to get the original flasher can is almost impossible, and do not use new flasher cans sold from retailers as its not designed for the sequencer (your tail lights will just flash solid). Also the old sequencer is a circuit board. Not the mechanical system used in the 67 or 68 ( I think).Led bulbs do not draw enough amps for sequencer to work
Replacing with led bulbs with the factory flasher can and the old mechanical sequencer will NOT work correctly as the voltage is different. I don't think they will correctly blink in proper sequence1966 Thunderbird I took a chance and bought some 1157 3.8 watt LED bulbs tried then as rear running, turn, and brake lights seen to work ok no issues the center bulbs were 1156 did not exchange them also the center bulb socket fixtures had splits so I will look for replacement back-up and running 1157 and 1156 bulb sockets not sure how to replace center bulb sockets yet. Good to know LED bulbs working with no issues no resistor needed will replace front turn 1157 LED bulbs tomorrow.
The stock 1965-66 Thunderbird turn signal sequencer will work with LED bulbs.Are the same items items needed when replacing 1157 bulbs to LED for A 1966 Thunderbird taillights