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LED REPLACEMENTS
#1
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auto.nut
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Wondering what others have experienced when replacing the 1154 bulb such as in the 1942 Packard 160. I ordered a pair from ledlights.com, and they did not work.
I would like to order from a different source but not sure they would be from a different mfg since most of them are mfg in China. What say you????

Posted on: 2022/10/13 13:05
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Re: LED REPLACEMENTS
#2
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HH56
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LEDs are polarity sensitive so if your Packard is stock make sure the 1154 LED replacements you get are universal or if you have a selection make sure you get the ones configured to work with positive ground. Also, if you have turn signals, LED bulbs generally do not work well with the old style thermal flashers. At the least, to work with the old flashers they usually need an extra resistor added at the sockets. Rather than add resistors, sometimes it is easier to swap out the old flasher to an electronic version which also needs to be able to work with positive ground.

Posted on: 2022/10/13 14:03
Howard
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Re: LED REPLACEMENTS
#3
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humanpotatohybrid
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Depending on how your turn signals are installed, you may be able to insulate the ground with some plastic and manually reverse the polarity. If you do this, BE SURE to put an inline fuse between the battery and light. If your insulator comes loose or wears out, you will have a dead short.

Can you attach a picture of how the light is installed?

Posted on: 2022/10/13 14:07
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Re: LED REPLACEMENTS
#4
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Packard Don
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Quote:
LEDs are polarity sensitive


This is not necessarily true. The little LED element itself is polarity sensitive but many bulb assembles have a bridge diode in the base that makes them polarity insensitive.

That said, for 1955 and earlier Packards, always be sure to check whether they are polarity independent so that they will work with positive ground systems. Some are and some aren't.

As already said, you also need to change the flasher unit to a solid state type as LEDs do not have sufficient load to make the old thermal type work. They are readily available in 6v, 12v, positive and negative ground and are are direct replacements except that most have a ground wire that must find a home.

As for where to buy, I usually buy on Amazon.com unless is a special bulb that isn't there, such as vintage-looking headlights. I usually look for Philips or Sylvania but, of course, none are made here.

Posted on: 2022/10/13 14:42
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Re: LED REPLACEMENTS
#5
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JeromeSolberg
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There is a lot of info on this thread:

https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=25086&post_id=240608#forumpost240608

You need to change the flasher to a solid state flasher (info in the thread)

Posted on: 2022/10/13 15:41
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Re: LED REPLACEMENTS
#6
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humanpotatohybrid
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If you know the wattage of the bulb you can add in a resistor to go with the LED bulb instead of changing your flasher. Though it's probably easier to just swap the flasher.

The resistor is in parallel with the bulb and is just there to draw extra current. For example if you are replacing an 18W bulb with a 6W LED, you need a 3 Ohm resistor of 12 or more Watts.

(Watts = Voltage^2 / Resistance... 12W = 6^2 / R, R = 3)

Posted on: 2022/10/13 18:44
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Re: LED REPLACEMENTS
#7
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Packard Don
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Yes, you hit the nail on the head. The point of using LEDs, aside from the extra brightness, is to NOT draw an extra load and any associated heat it may generate.

This is the solid state 6v positive ground flasher in my 1954 Patrician and it even clicks like the original. No need to add resistors.

Attach file:



jpeg  8DEC4E2E-8786-4618-849F-AD96D9AA3E61.jpeg (99.82 KB)
60923_6348b47594ee7.jpeg 1280X960 px

Posted on: 2022/10/13 19:57
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Re: LED REPLACEMENTS
#8
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R H
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What about a bipolar led.

Compatible with neg ground.

It replaces the 57 bulb. Think its a b9.

Posted on: 2022/10/14 5:28
Riki
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Re: LED REPLACEMENTS
#9
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54packpac
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Posted on: 2022/10/14 10:49
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Re: LED REPLACEMENTS
#10
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JeromeSolberg
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That's the one I used.

Posted on: 2022/10/14 10:58
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