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LED cab light problems

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Old Sep 10, 2018 | 06:36 PM
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From: Pryor, OK
LED cab light problems

Alright fellas, I got a problem. I replaced my old cab lights with some new LED cab lights. With the old ones, only two worked. I installed the new LED lights and none of them work. I have 12V going to each one and all are properly grounded, each verified with a Fluke. The instructions call for 12V power. Should I install a load resistor? Is there a trick with LED lights that I don't know? I contacted the manufacturer and asked for help, but have gotten no response. Any help would be appreciated.
 
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Old Sep 10, 2018 | 07:13 PM
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make sure the lamps are in correctly led lamps have a positive and neg. try removing the bulb turn it 180 and re plug it in.
Good luck
 
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Old Sep 10, 2018 | 08:12 PM
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From: Pryor, OK
Originally Posted by mooreswm
make sure the lamps are in correctly led lamps have a positive and neg. try removing the bulb turn it 180 and re plug it in.
Good luck
i can't remove the bulbs. I thought about reversing the wires. Wouldn't that be the same as turning the bulb?
 
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Old Sep 10, 2018 | 08:28 PM
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Originally Posted by SlikWillie
i can't remove the bulbs. I thought about reversing the wires. Wouldn't that be the same as turning the bulb?
it should be although hopefully they have reverse polarity protection.
 
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Old Sep 10, 2018 | 10:45 PM
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I'd guess you probably need to reverse the wires. I just switched my bulbs out with 194 LED bulbs and they only work one way. Since you can't switch the bulbs in yours, you'll have to try switching the wires.
 
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Old Sep 11, 2018 | 06:54 PM
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LED's

that would work, I was lucky I checked mine on the bench with a power supply because I have replaceable bulbs
 
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Old Sep 11, 2018 | 08:07 PM
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Ok guys. I swapped the wires. Now, three lights are working and two are not. Still now response from the manufacturer. I reread the instructions again and sure enough, they are written wrong. I will be calling them again and try to straighten this out. I'm afraid that I may have ruined the two that are not working.
 
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Old Sep 12, 2018 | 07:32 PM
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Did you test all of them before you installed them…to make sure they all actually did work?
 
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Old Sep 13, 2018 | 07:40 PM
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Yes I did, Did you recheck your connections . You said that you can't reverse the bulb am I to assume that the bulbs are not replaceable
 
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Old Sep 13, 2018 | 10:56 PM
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That is correct, the bulbs are not removable. I called the manufacturer and low & behold, they only speak Chinese, so no help there. So I called Amazon, where I purchased the set and they are sending me another set for free.
 
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Old Sep 14, 2018 | 06:13 PM
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Good to here that, test them with a power supply or a battery so you know the +and-
 
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Old Sep 15, 2018 | 02:29 PM
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Got my replacement lights. Tested two before installing them. All working now. I know that I am on the wrong forum since my truck is a 1978, but I knew you guys would have more experience with LEDs. Thanks for all the help.

 
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Old Sep 15, 2018 | 04:48 PM
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Originally Posted by SlikWillie
Got my replacement lights. Tested two before installing them. All working now. I know that I am on the wrong forum since my truck is a 1978, but I knew you guys would have more experience with LEDs. Thanks for all the help.
looks good! glad you got them working.
 
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