How To: Fixing Hyper Flash Turn Signal (Replace Flasher Relay)

BoomSticks

Member
This works for my 99 Limited 4x4. I'm not sure if it'll work for other years. I would tell you to pull your flasher relay before ordering to make sure the one mentioned here is the same as yours.

I got myself a fancy new bumper that came with LED turn signals. Of course once I got them wired in, they hyper flash.

cp4edPLh.jpg

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The hyper flashing drove me crazy, so I set out to order the stuff I needed to fix it. My understanding was that I needed a resistor wired in to match the resistance of the old incan bulb, so the relay would think a bulb was present, because the purpose of hyper flashing is to tell the driver your turn signal bulb burned out.

I didn't know about new flasher relays that were made to work with LEDs. Seemed much simpler, and it is. Just swap relays.

However, the flasher relay is on the back of the fuse panel under the kick panel by the driver's left knee. A pain in the ass to get to by removing trim and panels and such, I figured I would try something easier.

It worked!

1- Start by taking off the access panel to get to the fuse panel.

2- Turn the key to ON/ACCESSORY, and turn on your turn signal right or left. You should be able to hear the clicking coming from the fuse panel. That's the relay clicking.

3- Reach your right hand up and around the back of the fuse panel. This is what you're trying to grab, and you'll feel it clicking once you get your fingers on it:

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4- Wiggle and pull until it comes loose. Once you get it out, this is what you'll have:

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5- Compare your relay plugs. I got the adjustable speed one. Make sure the one you get says CF14/EP35.

https://www.amazon.com/gp/product/B075K51FPH/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

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6- Plug in the new one. This is the only difficult part. You have to remember where you pulled the old one, and feel where to insert the new one. The single top prong goes up. It'll go in like this:

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You'll know as soon as your prongs hit the correct sockets because the relay will start clicking, hopefully at a slower normal pace.

Hope this helps, good luck gents!
 
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great job. good writeup with pics and explanation. I like when folks come up with clever solutions to problems.
 
Also you can grab a led relay (hyperflash fix) at Autozone if you're into instant gratification, that's what I did. They're a stock item and work perfect. Part# - Tridon EP35
 
I did the same thing to fix the hyper blinking when I put on my CBI front bumper that came with LED turn signals. In the video below, if you watch from play time 35:57 to 43:56, you'll see how I swapped my relay out in my 98 3rd Gen.

This is the LED turn signal relay I purchased:
https://www.amazon.com/gp/product/B00XAU66V4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

<iframe width="560" height="315" src="https://www.youtube.com/embed/cVmoRK54P9k" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
 
BoomSticks! Thank you for your pics and very detailed description. This helped me out tremendously! Was able to replace the relay with the EP35 within 1hr. 2001 SR5 Toyota 4runner 2wd V6
 
Boomsticks, thank you for the write up. I didn’t even know such product existed. This will save so much time in trying to figure out how to stop hyper flashing. I have four LED bulbs sitting on the bench right now, because I thought I had to dedicate some time to figure this stuff out. Hats off to you!
 
thanks for this - i got a full shrockworks armor kit off CL for next to nothing including all lights -- when i wired up the LED turn signals - could not figure out what was up with that rapid flashing - your post was an easy fix $12 at advance auto and all good. I did have to unbolt the fuse box though - could not pull it out from behind - maybe b/c of the clutch pedal stuff being in the way -- nonetheless - simple save and thanks again!
 
Just swapped out my flasher relay on my 01. Shortcut is to just pull the vent tube and you can reach the relay from the top. Easy peasy lemon squeezee
 
I did the same thing to fix the hyper blinking when I put on my CBI front bumper that came with LED turn signals. In the video below, if you watch from play time 35:57 to 43:56, you'll see how I swapped my relay out in my 98 3rd Gen.

This is the LED turn signal relay I purchased:
https://www.amazon.com/gp/product/B00XAU66V4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

<iframe width="560" height="315" src="https://www.youtube.com/embed/cVmoRK54P9k" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

Curious if this changes the stock blink speed? I realize you lose the noise due to the electronic vs thermal aspect, but curious if the blink speed is the same as stock (pre LED) lights?
 
Curious if this changes the stock blink speed? I realize you lose the noise due to the electronic vs thermal aspect, but curious if the blink speed is the same as stock (pre LED) lights?
The unit I got still clicks. It is slightly faster (maybe 10-15%) than stock. Front LED, rear incandescent currently.

-Charlie
 
Curious if this changes the stock blink speed? I realize you lose the noise due to the electronic vs thermal aspect, but curious if the blink speed is the same as stock (pre LED) lights?

It still clicks, if you get the one the OP suggests it's adjustable to whatever you want.
 
It still clicks, if you get the one the OP suggests it's adjustable to whatever you want.

+1 on an adjustable relay. I ordered one about two years ago and it came with a dial that let me adjust how fast the blink speed was. Can still hear it click. Can't find it on eBay anymore though, but I bet there's plenty out there.
 
I did the same thing to fix the hyper blinking when I put on my CBI front bumper that came with LED turn signals. In the video below, if you watch from play time 35:57 to 43:56, you'll see how I swapped my relay out in my 98 3rd Gen.

This is the LED turn signal relay I purchased:
https://www.amazon.com/gp/product/B00XAU66V4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

<iframe width="560" height="315" src="https://www.youtube.com/embed/cVmoRK54P9k" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

Confirmed this one has the same blink rate. Thank you sir! Forgot to check for sound (deaf guy!) but I think it has the sound.

Special thanks to [MENTION=138238]BoomSticks[/MENTION] for this tutorial!
 

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