LED Flasher Relay - Page 2 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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  #11  
Old 09-14-2009, 09:50 PM
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barelybenjamin barelybenjamin is offline
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No problem, man. I'm still having the problems with the tail lights. If you have the same problem after you get the 487, let me know.
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  #12  
Old 09-16-2009, 10:16 AM
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It is confirmed. The LED flasher relay is the LM487 from either Napa Auto Parts or from LEDlight.com (http://www.ledlight.com/electronic-l...her-lm487.aspx).

I just put it in and had a nice drive so I tested out cruise control, which has gotten criticism for not working with this flasher. Functioned fine and the flash is finally normal as well. I believe this flasher is electronic and I was worried about it not clicking with my turn signals but it still clicks a relay, which is good.

If you have LED signals and don't want to get a million load resistors, this is the easiest fix.

Benjamin, I haven't ridden with the relay at night yet but I will let you know if I have any issues.
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  #13  
Old 09-16-2009, 06:16 PM
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barelybenjamin barelybenjamin is offline
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Quote:
Originally Posted by bigapple View Post
It is confirmed. The LED flasher relay is the LM487 from either Napa Auto Parts or from LEDlight.com (http://www.ledlight.com/electronic-l...her-lm487.aspx).

I just put it in and had a nice drive so I tested out cruise control, which has gotten criticism for not working with this flasher. Functioned fine and the flash is finally normal as well. I believe this flasher is electronic and I was worried about it not clicking with my turn signals but it still clicks a relay, which is good.

If you have LED signals and don't want to get a million load resistors, this is the easiest fix.

Benjamin, I haven't ridden with the relay at night yet but I will let you know if I have any issues.
So what's happening is my RR park (#17) and LR park (#14) fuses are blowing when my lights turn on, disabling the parking lights. Tried with and without resistors. Are you having the same prob?

For now I'm just going to put my old filament bulbs back into the park/brake sockets so I don't get pulled over for no parking lights or license lights.
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  #14  
Old 09-16-2009, 09:34 PM
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Originally Posted by barelybenjamin View Post
So what's happening is my RR park (#17) and LR park (#14) fuses are blowing when my lights turn on, disabling the parking lights. Tried with and without resistors. Are you having the same prob?

For now I'm just going to put my old filament bulbs back into the park/brake sockets so I don't get pulled over for no parking lights or license lights.
Well I didn't realize the orientation of polarity with the new LED wedge bulbs when I put them in. I managed to blow all 3 fuses, which include BRAKE (#34) RR park and LR park. I didn't realize that in doing this, the fuses that control the license plate lights would also be blown since they are in the same circuit as those park lights. Then after getting the orientation of the bulbs correct, I was able to only get the brake lights to work but I had quad brake lights too and this was ridiculously confusing.

I opened up and realized when the park lights came on I had a ground directly connected to positive, which is the reason fuses are there, to prevent overload of a circuit and a potential fire. I am going to solder up my own connections in the circuit board and post pictures up soon. Maybe it'll shed some light on your problem.
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  #15  
Old 09-17-2009, 02:44 PM
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Quote:
Originally Posted by barelybenjamin View Post
So what's happening is my RR park (#17) and LR park (#14) fuses are blowing when my lights turn on, disabling the parking lights. Tried with and without resistors. Are you having the same prob?

For now I'm just going to put my old filament bulbs back into the park/brake sockets so I don't get pulled over for no parking lights or license lights.
Well I'm using my original OEM wedge bulbs right now but it's only because I didn't realize the polarity of the LED bulb when I installed it, which is why I managed to blow out every fuse and almost rip my hair out.

I am soon going to show a tutorial thread and show how I'm going to orient the polarity. It should be interesting.
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  #16  
Old 09-19-2009, 10:41 AM
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Well I'm using my original OEM wedge bulbs right now but it's only because I didn't realize the polarity of the LED bulb when I installed it, which is why I managed to blow out every fuse and almost rip my hair out.

I am soon going to show a tutorial thread and show how I'm going to orient the polarity. It should be interesting.
I have a SLT also. I have 4 RED, 4 AMBER 27 SMD #3157 bulbs and 2 AMBER #194 bulbs on the way to replace all of my running, brake, and turn/flasher bulbs.
Polarity issues aside does the LM487 work as advertised in all modes without modifications?
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  #17  
Old 09-19-2009, 12:55 PM
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I have a SLT also. I have 4 RED, 4 AMBER 27 SMD #3157 bulbs and 2 AMBER #194 bulbs on the way to replace all of my running, brake, and turn/flasher bulbs.
Polarity issues aside does the LM487 work as advertised in all modes without modifications?
Surely works for me. I read about it in a Trailblazer SS forum and some were having issues with cruise control not working since the relay runs on lower current.

I haven't had any issues at all with it though. All of the polarity issues I had were from the type of LED bulb I bought, not the relay itself. Everything still works great and its got a normal flash. It's a direct plug-in. Just read the beginning of this thread to see how to remove the relay, then get the new LM487 and pop that baby in.
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  #18  
Old 09-19-2009, 02:12 PM
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Would you have to convert every turn bulb to LED?
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  #19  
Old 09-19-2009, 08:23 PM
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Would you have to convert every turn bulb to LED?
No not every bulb. It might even work with incandescent bulbs. I know a mixture is fine because I'm pretty sure it's electronic, so it doesn't rely on the load of the bulbs.
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  #20  
Old 09-19-2009, 09:00 PM
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Cool man, I've been hesitant to do it because DE is strict on lights (like flashing fast), thanks for the info and the how to
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