So I recently installed some LED lights in my front turn signals. I already knew of the hyperflash issue from my previous ride so I ordered the resistors to go with them. I got everything from superbrightleds.com. Anyway, I put in both lights first to test to make sure hyperflash was going to be an issue. The left blinker had and still has no issues without a resistor. The right blinker immediately had the issue so I installed the resistor. The hyperflash went away...kind of. It's been about 1 1/2 weeks since I installed them and the left blinker still has no issues even without the resistor. The right blinker picks and chooses when it wants to have issues. I'd say about 20% of the time, it works just fine. The other 80% of the time it has hyperflash. So I'm wondering if I need to install the resistor on the other blinker as well? Or if the issue could be elsewhere. Any ideas? Thanks!

 

Change the blinker relay under the dash with a trailering relay. You can get one from autozone for like ten bucks. Its called a trident 29 just don't remember the number exactly. Search hyperflash.
This relay fixed my hyperflash when I went with LEDs.

 

I'll have to look into that more. For some reason I thought I read somewhere on here that the 09's and up no longer had the relay. Something about it all being controlled from the computer now.

 

I'm thinking about just going with the one's from superbrightleds that have the built in resistors and be done with it. Not sure if they have a good reputation or not (the lights, not the brand).

 

Oops sorry didn't know you were 09+ on the app I cant read sigs or info. I believe you are right about there being no relay.

 

By the way, I ended up going with superbrightleds.com's 3157s with the built in resistors.

For anyone that is interested, this DOES solve the hyperflash issue. At least in my 2013 F150. I have even ordered 4 more for my tails. Certainly worth the money to not have to deal with wiring and mounting external resistors.