LED Turn Signal Bulbs Resistor

Ohm law, that's all you need ...
The old bulbs were 20W which means they needed about 1.6A to properly work at 12V.
Power= Voltage x Current
To get the right blinking timing you need to simulate 1.6A, so, find out what's the LED's current and then add the current circulating thru the resistor ... for example, if the LED's use 0.6A you will need a resistor of 12 Ohms to make up for 1A.
Resistance = Voltage x Current
It's very important you also calculate the power of the resistor which in this specific example would be at least 12W. Use always higher power so at least 15W.
Hope this helps.

 

You can purchase a replacement flasher made specifically for use with LED bulbs to mitigate the hyper flashing. This is the easiest way to go. And the best benefit is the lack of need to cut into the wiring harness.

The hardest part is getting to the 4mm bolt head that holds the flasher relay in place.

 

Even better ... and easier !

 

Mmmm i doubt, the OEM flasher take in consideration all the bulbs currents total. If your plan is to keep the OEM bulbs on the rest of the car, replacing the OEM flasher with one for LED's might not work ... someone please chime in.

 

my son did this on his vette (just the rear lamps) and I recall he used individual resistors across each bulb that were 6 ohm and 50W rating. There's a place on line that sells all this stuff for auto led's.

 

I replaced just the rear bulbs with LEDs and used a replacement flasher to mitigate the hyper flashing. I think you are looking for problems cutting into the wiring harness. Why not try something like that offered in the link below before cutting, soldering, heat shrinking, taping, and hoping for the best.

3 Pin Electronic Motorcycle Car Flasher Relay Fix LED Hyper Flash Signal Blinker | eBay

 

Please contact Stef at Scud Ing Swiss | Home Page | ScudIng.com. He makes a flasher that for sure works with a combination of LED bulbs and OEM filament bulbs. The flasher is part of the kits he is offering. He may be willing to sell the flasher separately.

 

Is there a reason to NOT have it flash fast?
MY brother's Elise had a malfunctioning rear blinker that did this (apparently a common problem for the Elise) and it REALLY caught my attention on a cruise we took.
I have fast modulator on my motorcycle rear brake spoiler and it really seems to wake people up.

 

Fast flashing could be a personal preference in a 3 pedal car. In a car with the F1 transmission the brake and 3rd brake light resistance or current draw is used to sense state of braking as well as the state of the engine cover.

 

Hi Alan, what type of LED bulb did you buy for your tail light and brake light?

If you decide to do load resistor wise - these load resistors should work.

A Pair of LED Turn Signal Blinker Bulb Load Resistors 50W 6ohm 7440 7443 T20 992 | eBay

A replacement flasher designed for LED bulbs is actually a better way to go.

Does anyone know where the flasher relay is located?

Dan

 

The flasher relay on my LHD US car is under the dash on the passengers side below the glove box and close to the passenger side door. Held in place with a 4mm bolt.

 

Thanks for the info.

Is it hard to get to?

Dan

 

Thanks for the follow up info.

As mentioned, an alternate solution is the load resistor but I hate those load resistors as they get hot, they need to be mounted to a hard surface so they wont flop around while driving.....

Dan

 

Has anyone got any pics or video of their light conversions? Also is this expensive to do?

 

Have a look at the other fcar site. There are pictures of my 360 with the LED brake lights and 3rd brake light.

 

Thanks Alan.

 

Will do.

Thanks.

Dan

 

Sharp looking car you have!

And thanks for the great info about LED tail light options.

Dan

 

did anyone find the correct flasher for adding front led turns?