powerloss in higher gears

I have a 2000 Tacoma Prerunner. 3.4 V6. ODO is at 352000 miles. Have had the truck for about 6 years. I've put around 70k miles. A new problem started where when I'm in 3rd gear or overdrive, if I use my right turn signal it causes an almost power loss. The truck acts like it's in neutral so my RPMs go up but I'm losing speed. I can confirm its only the right turn signal that causes this and it's only at speeds higher than 55 or 3rd gear or OD. The right signal is blinking fast at an almost rythmatic pattern but all of my bulbs are fine. I do have after market halogen head lights and led tail lights. I cannot seem to figure out what exactly is causing the issue. Any ideas?

 

Weird, but I got aftermarket turn signals and replaced the fusebox under steering wheel and fixed the problem I forget the fus when i get home i can snap pic and u can buy at autozone