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-   -   The proper (and I mean PROPER) turn signal flasher mod for LED bulbs. (https://www.ft86club.com/forums/showthread.php?t=114284)

ermax 02-05-2018 07:12 PM

Quote:

Originally Posted by catsspat (Post 3039581)
Wait, so you have different front/rear bulbs? If so, your math is right. You can also just use (front+rear)/2 for the wattage. However, what do you mean by whatever-watts "when flashing?" Flashing means nothing to this equation. All you care about is the bulb wattage when it's ON.



Well they are switch backs and pull 3w when just the parking lights are on and when they are flashing they switch from white to yellow and draw 4w. But I never measured those myself. I’m just trusting the specs on the amazon listing.

catsspat 02-05-2018 08:12 PM

You NEVER trust seller claims on bulb wattage.
Based on the fact that you needed much higher value resistors, those bulbs must be drawing far less than 4 watts.

ermax 02-05-2018 08:42 PM

Quote:

Originally Posted by catsspat (Post 3039611)
You NEVER trust seller claims on bulb wattage.
Based on the fact that you needed much higher value resistors, those bulbs must be drawing far less than 4 watts.



Yeah that is my thinking. I ordered the fronts and a relay that omits the burnt bulb notification. But it has this annoying lag when first turning on the blinkers. Then I came across a review on Amazon were someone said they modified their OEM relay so then I found this thread. Before I selected a resistor I ordered bulbs for the rear from the same company that made the front bulbs. When those came in I tested their draw myself and it matched the specs they had on the listing so I figured the specs on the fronts didn’t need to be verified.

Eventually I will pull them out and check them myself and then get a smaller resistor so the burnt bulb detection will work again.

csol 05-28-2019 09:55 AM

In the same boat. No idea what resistor to use.

soundman98 05-28-2019 07:41 PM

Quote:

Originally Posted by csol (Post 3222039)
In the same boat. No idea what resistor to use.

don't, just order either an 'led flasher' off ebay/amazon/whatever, or buy a tapturn. the newest iterations of tapturn don't have the issue described.

csol 05-29-2019 06:33 PM

Quote:

Originally Posted by soundman98 (Post 3222328)
don't, just order either an 'led flasher' off ebay/amazon/whatever, or buy a tapturn. the newest iterations of tapturn don't have the issue described.

I got a spare blinker module so I'm going to try it first.
Will a 0.22 ohm resistor work

ermax 05-29-2019 08:33 PM

The proper (and I mean PROPER) turn signal flasher mod for LED bulbs.
 
Quote:

Originally Posted by csol (Post 3222753)
I got a spare blinker module so I'm going to try it first.

Will a 0.22 ohm resistor work



It all depends on the draw from the LEDs. This thread has all the info you need to do the number crunching.

Kodename47 05-30-2019 08:04 PM

I've done this a few times to get the resistance right for various bulbs. Just but a pack of resistors and parallel them if required.

csol 06-02-2019 07:12 PM

Quote:

Originally Posted by Kodename47 (Post 3223209)
I've done this a few times to get the resistance right for various bulbs. Just but a pack of resistors and parallel them if required.

I can't exactly pull off bumper and test load easily so i went for trial and error method.
I tried 0.22ohm (caused only one blink and thats it)
0.44ohm (same result)

0.1ohm (fixed blinkers except now hazards are only one blink and then silent)

http://i.imgur.com/ka5fTS7.jpg

I ordered a Tapturn module so I'll probably use this temp fix until that comes.

Kodename47 06-03-2019 02:45 PM

Quote:

Originally Posted by csol (Post 3224051)
I can't exactly pull off bumper and test load easily so i went for trial and error method.
0.1ohm (fixed blinkers except now hazards are only one blink and then silent)

Means 0.1 is still too much.

csol 06-03-2019 08:03 PM

Quote:

Originally Posted by Kodename47 (Post 3224290)
Means 0.1 is still too much.

might as well put a wire from 1 terminal to the other? 0.1 is so low

catsspat 06-04-2019 10:26 AM

Quote:

Originally Posted by Kodename47 (Post 3224290)
Means 0.1 is still too much.


Exactly. The over-current protection is kicking in.


Remember, the original resistor meant for 21W incandescent bulbs is 0.02-ohms. So if the LEDs are high power (or the bulbs have extra resistors built-in to just burn up power), the resistor values may need to get quite low to match them.

csol 06-26-2019 04:03 AM

Quote:

Originally Posted by catsspat (Post 3224512)
Exactly. The over-current protection is kicking in.


Remember, the original resistor meant for 21W incandescent bulbs is 0.02-ohms. So if the LEDs are high power (or the bulbs have extra resistors built-in to just burn up power), the resistor values may need to get quite low to match them.

Yeah I'll probably try just a straight wire after my tapturn module arrives


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