Blinking lights / no brake lights?

I am having a strange problem in2012 tacoma 4x4. I have no tail or brake light and when I turn on my left turn signal (only my left), all the lights on my dash / radio blink? Is this caused by a bad fuse some where?

 

Check your grounds under the rear of the truck for cleanliness and tightness. Check your battery connection as well

 

Thanks desertrunner24 - is there just the 1 ground location by the drivers side rear wheel?

 

No it should be under the bed by the drivers side tail light. The one buy the wheel is for emissions

 

I took it off, cleaned (steel wooled) everything and put it back together - checked and changed the fuses too - no luck! Any other ideas I can try?

 

Are your battery terminals clean and tight? Check the relay under the hood swap with another one if swapping it fixes it then you know it a bad relay. Also check the flasher behind the interior fuse box

 

Have you just added any led bulbs anywhere. They can do weird crap.

 

No,nothings been added. Just started happening all of the sudden!

 

Sorry was hoping for a quick fix for you. Seems I’d follow desertrunner24 s advice swapping relays. My 08 has non led tails.
Not sure if a led could go bad and back feed?
Or as was said a ground somewhere electrical gremlins suck.

 

No such luck - I checked the terminals and fuses / relays with no help! Must be an electrical gremlin somewhere that I'l have to take in to get fixed...

 

That sucks I’d be lost also.
Sorry man good luck!

 

THANKS!

 

You're going to have to start inspecting your entire wiring harness.

My money is on rodents chewing through some wire somewhere.

 

I'd go after the tail /brake lights first - as it's a possibility fixing one thing will fit the other. Turn on your tail lights only they troubleshoot. Check the ground(s) to the frame IN the light sockets then check for 12v power IN the socket - one or both will be missing/bad. Trace back from there.