Led bulbs

rxp-rider · 09-16-2010, 06:11 PM

I tried to use a set of 1157 led bulbs in my tail lights,but they don't work.They fit but won't light. Does anyone know what I need to do to get them to work? I replaced my red tail light lens with clear ones and would like a red led bulb. Will I have to use a standard red bulb?

Free Spirit · 09-16-2010, 07:25 PM

One thing I can think of would be to check polarity. LEDs are polarity sensitive, unlike an incandescent bulb. You might need to reverse your wiring to get it to work. Beyond that, there's the basic "check the fuse".

rxp-rider · 09-16-2010, 07:35 PM

I re-installed the stock bulb and it works.I also tried to flip the led bulb to see if it was a polarity issue and still got nothing. Could I need a resistor on the wires? Does the led bulb just draw too little power for the socket to notice the bulb?

COURTESYCART · 09-17-2010, 11:04 AM

try a different bulb if you can. you may have a bad one.

gornoman · 09-17-2010, 11:06 AM

Prove the LED bulb with some test leads and a 12vdc source.

rxp-rider · 09-17-2010, 03:48 PM

I used a 12v power supply direct to the bulb and it works. I had to put the positive to the bulb and the negative to the side of the bulb for a ground. Do the standard bulbs just don't ground or am I missing something. I installed a different 1157 amber bulb and it works.So how do I get the led to ground?

shadowman · 09-17-2010, 04:33 PM

are the lights grounded off a battery? if not try grounding from a battery........................

rxp-rider · 09-17-2010, 04:47 PM

Yes,they are ground to the battery.This is really bugging me.Could it be that the stock bulb was a 2057 and the new one is a 1157 led?,But the amber bulbs are 1157 but not leds,and they work. (Luckily I shave my head or I would be ripping it out.)

DOOmsman · 09-17-2010, 05:01 PM

Check that the nubs

on the bulb are oriented the same
just a thought.

gornoman · 09-17-2010, 05:06 PM

LED bulb verified.
Socket verified.
LED will not work in socket.

Conclusion: LED bulb not making contact in socket.

How many wires lead to the socket?
How many terminals on LED bulb?
Does the LED bulb base look identical to the bulb base that works?

09-16-2010, 06:11 PM	#1
rxp-rider Gone Wild Join Date: Mar 2010 Location: CLEARWATER,FL. Posts: 555	Led bulbs I tried to use a set of 1157 led bulbs in my tail lights,but they don't work.They fit but won't light. Does anyone know what I need to do to get them to work? I replaced my red tail light lens with clear ones and would like a red led bulb. Will I have to use a standard red bulb?

09-16-2010, 07:25 PM	#2
Free Spirit Gone Wild Join Date: Nov 2009 Location: Pennsylvania Posts: 167	Re: Led bulbs One thing I can think of would be to check polarity. LEDs are polarity sensitive, unlike an incandescent bulb. You might need to reverse your wiring to get it to work. Beyond that, there's the basic "check the fuse".

09-16-2010, 07:35 PM	#3
rxp-rider Gone Wild Join Date: Mar 2010 Location: CLEARWATER,FL. Posts: 555	Re: Led bulbs I re-installed the stock bulb and it works.I also tried to flip the led bulb to see if it was a polarity issue and still got nothing. Could I need a resistor on the wires? Does the led bulb just draw too little power for the socket to notice the bulb?

09-17-2010, 11:04 AM	#4
COURTESYCART Gone Wild Join Date: Nov 2008 Location: Montgomery, AL Posts: 1,463	Re: Led bulbs try a different bulb if you can. you may have a bad one.

09-17-2010, 11:06 AM	#5
gornoman Stay thirsty my friends! Join Date: Jan 2007 Location: Suburban Chicago Posts: 24,292	Re: Led bulbs Prove the LED bulb with some test leads and a 12vdc source.

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09-17-2010, 03:48 PM	#6
rxp-rider Gone Wild Join Date: Mar 2010 Location: CLEARWATER,FL. Posts: 555	Re: Led bulbs I used a 12v power supply direct to the bulb and it works. I had to put the positive to the bulb and the negative to the side of the bulb for a ground. Do the standard bulbs just don't ground or am I missing something. I installed a different 1157 amber bulb and it works.So how do I get the led to ground?

09-17-2010, 04:33 PM	#7
shadowman The Last Moja Morani Join Date: Jan 2007 Location: jumping from cart to cart Posts: 8,975	Re: Led bulbs are the lights grounded off a battery? if not try grounding from a battery........................

09-17-2010, 04:47 PM	#8
rxp-rider Gone Wild Join Date: Mar 2010 Location: CLEARWATER,FL. Posts: 555	Re: Led bulbs Yes,they are ground to the battery.This is really bugging me.Could it be that the stock bulb was a 2057 and the new one is a 1157 led?,But the amber bulbs are 1157 but not leds,and they work. (Luckily I shave my head or I would be ripping it out.)

09-17-2010, 05:01 PM	#9
DOOmsman Gone Wild Join Date: Jul 2008 Location: Reddick IL Posts: 11,220	Re: Led bulbs Check that the nubs on the bulb are oriented the same just a thought.

09-17-2010, 05:06 PM	#10
gornoman Stay thirsty my friends! Join Date: Jan 2007 Location: Suburban Chicago Posts: 24,292	Re: Led bulbs LED bulb verified. Socket verified. LED will not work in socket. Conclusion: LED bulb not making contact in socket. How many wires lead to the socket? How many terminals on LED bulb? Does the LED bulb base look identical to the bulb base that works?

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