Switchback LED - no white and hyperflash amber
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From: DFW (hell) TX
Switchback LED - no white and hyperflash amber
I just got some switchback LED's for my front turn signals and put one in to test and unfortunately I have an issue...
The LED is supposed to be white when just the regular lights are on, but it doesnt light up at all. The amber turn signal does the hyperflash though. From research, I know I need a 3ohm resistor to fix that, no biggie... But why would the white not turn on?
I did flip the bulb around because LED's are polar specific, but that didn't fix it, and when in wrong, the amber doesnt even turn on.
2011 Truck
Any ideas?
The LED is supposed to be white when just the regular lights are on, but it doesnt light up at all. The amber turn signal does the hyperflash though. From research, I know I need a 3ohm resistor to fix that, no biggie... But why would the white not turn on?
I did flip the bulb around because LED's are polar specific, but that didn't fix it, and when in wrong, the amber doesnt even turn on.
2011 Truck
Any ideas?
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From: DFW (hell) TX
I would imagine that the side with the halogen would be out as well if that were the case? Would it create an issue if one side was LED and the other was halogen, difference in load or something?
The white light comes on with the parking light wire. Hyperflash is just a issue with the turn signal, so get the resistor.
Back to the running lights- get a DMM and check for voltage on the running lights
Back to the running lights- get a DMM and check for voltage on the running lights
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From: Philly
^ What Raptor said. I just installed these on my 2010. I used a 6ohm resistor connecting the outer 2 wires on the signal harness(ground wire and turn signal function wire) and the hyperflash went away.
As for the white not working, does the other side work, or does the other LED bulb work in the original side? That's an easy way to troubleshoot without a meter. Also, if the OEM bulb works as parking lights, then the LED one should work in that function as well (light up white.) It seems like if one new bulb works, or if the OEM bulbs work as parking lights but the LED ones don't, the LED bulbs are bad.
As for the white not working, does the other side work, or does the other LED bulb work in the original side? That's an easy way to troubleshoot without a meter. Also, if the OEM bulb works as parking lights, then the LED one should work in that function as well (light up white.) It seems like if one new bulb works, or if the OEM bulbs work as parking lights but the LED ones don't, the LED bulbs are bad.
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^ What Raptor said. I just installed these on my 2010. I used a 6ohm resistor connecting the outer 2 wires on the signal harness(ground wire and turn signal function wire) and the hyperflash went away.
As for the white not working, does the other side work, or does the other LED bulb work in the original side? That's an easy way to troubleshoot without a meter. Also, if the OEM bulb works as parking lights, then the LED one should work in that function as well (light up white.) It seems like if one new bulb works, or if the OEM bulbs work as parking lights but the LED ones don't, the LED bulbs are bad.
As for the white not working, does the other side work, or does the other LED bulb work in the original side? That's an easy way to troubleshoot without a meter. Also, if the OEM bulb works as parking lights, then the LED one should work in that function as well (light up white.) It seems like if one new bulb works, or if the OEM bulbs work as parking lights but the LED ones don't, the LED bulbs are bad.
Last edited by sam1947; Oct 19, 2012 at 08:17 AM.
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From: Philly
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for my 2012 F150 HID projector install, I also have a switchback orange/white LED for the turn signal bulb. The white would never come on, and the amber would flash correctly, no hyperflash. Getting 6ohm power resistors fixed that issue perfectly. You put the resistor in parallel with the LED, across the OUTER two wires of the connector. Strange, since the inner wire is actually the white LED supply, but apparently the BCM looks at the outer wire filament pair to decide whether the bulb is burned out and makes you want to replace it as fast as possible given it's the turn signal.
Interesting how that socket is wired btw... no matter how you put in the analog bulb, it works correctly. I tried reversing the LED bulb... and now I can't remember if it worked or not.
Anyway, on a 2012 F150 Ecoboost FX4, the switchbacks will do everything fine with the 6ohm power resistor in parallel with the outer two wires of the turn signal connector cable. BTW, I tested the temp of that power resistor after like 15 min of being on... hardly warm to the touch. I did bolt the resistor to the metal frame pretty well... so perhaps alot of the heat is dissipated to the frame.
Interesting how that socket is wired btw... no matter how you put in the analog bulb, it works correctly. I tried reversing the LED bulb... and now I can't remember if it worked or not.
Anyway, on a 2012 F150 Ecoboost FX4, the switchbacks will do everything fine with the 6ohm power resistor in parallel with the outer two wires of the turn signal connector cable. BTW, I tested the temp of that power resistor after like 15 min of being on... hardly warm to the touch. I did bolt the resistor to the metal frame pretty well... so perhaps alot of the heat is dissipated to the frame.