Back Right Light (turn signal) Acting Weird

When I have the right turn signal on and apply the brakes. It does a hyper flash. The turn signal light just seems to be very dim as well. Also, when I have my lights on at night. The right turn signal always hyper flashes and slow flashes when brakes are applied. Really strange. I have replaced all the bulbs. I have no LED. All fuses have been checked. The back right light fixture is an aftermarket I bought quite a few years back but there were no problems then that I can remember. Not sure if the fault is in that. Also, when the lights are on at night and I apply the brake. My right turn signal notifier light on my dashboard illuminates ever so slightly. Def some kind of electrical mishap. So before I go and buy a new rear passenger light fixture. I wanted to see if anyone else has any ideas. Thanx.

 

Bad ground. Double check the connections at the ground on the housing and double check all the connections and connectors

 

The ground system on our rear lights is prone to rusting and causing strange things back there. As you can see, they are tied together, so the rust can cause various symptoms. Worth looking at on your truck.

Pull the lamp out and use a piece of scrap wire to run a temp grnd and see if it fixes your problem. Clean a small area of the socket with a file or metal sanding paper to use the temp grnd wire.

 

Check your trailer plug as well. They can corrode and cross feed over to different pins.

 

X2 on this. I was having issues with my blinkers and it was the trailer plug. Ended up just removing it on my 97 single cab.

 

Ok, unless im dense, which may be. I dont think I have a trailer plug. Only thing running through underneath is license plate lights.

 

It's common not to have a trailer plug.

Trouble must be somewhere else.

 

yah, about to go out there and open this up again. I'm pretty mechanically inclined until I get to electrical. So this is going to be a bit of B!

 

So trying a new ground, Im going to have to cut the main ground to splice the new wire in. Correct?

 

you have a bad turn signal bulb, you get the hyper blinking from a burn out bulb.. also when u use leds to replace the original bulbs, same issue.

I been driving in my old truck with hyper lights for like 10 years when I swapped to led. a fix is to put a resistor in line, but ehhh

 

Im using no LEDS and my bulb is not burnt. Replaced w brand new.

 

with the correct bulb?

 

yes, 1156, replaced all other bulbs as well with correct bulb.

 

Either you are lucky or highway patrol in you area are lazy SOB. In California you would already pay for whole year supply of doughnuts for entire CHP when you drive for 10 years with hyperblinking turn signals.

You don't need no stinking resistors to cure hyperblinking LEDs. Just go to auto part store and get LED compatible flasher - 10-15 dollars depends on store, state and taxes. The swap is 15-30 min job depends on your skills.

 

No, you don't have to cut your old one. Just suggesting a temp one in case the existing is not grounding well. A wire from a clean spot on the body or frame directly to a clean spot on the bulb housing. It's just one thing I would check if my bulbs and switches seemed to be working okay.

 

Hi, I'm new to the forum but need your help. My turn signals were intermittent but now just rattle the relay or don't but they don't work at all. The $124 replacement relay hasn't solved the problem nor corroded bulb sockets. I'm thinking the hazzard relay next but open to ideas. 95 Tacoma 3.4. Thanks all, Mike

 

There is no such thing as "hazard relay". Both: turn signal and hazard lights use the same "turn signal flasher" (10-15 dollars for aftermarket LED compatible flasher). Hazard light switch is just a simple switch, same as turn signal switch, both connected to the same flasher.

 

I made a thread about this a few months ago. ALL sorts of crazy shit would happen, just like your issue here. I removed my trailer harness (which you don't have, skip this step obviously). Had more issues. Traced my wires out and I couldn't find anything. Put both new taillight assemblies in. I thought my issue was the drivers side light, and it turned out to be the passenger side light. Moral of the story, if you're going to replace a taillight assembly, just do both. A bad ground in one taillight assembly could be causing an issue with your other one. Replacing both is relatively inexpensive, and also eliminates one other possibility should it not fix your issue. Good luck!
Edit: here is the link https://www.tacomaworld.com/threads/no-tail-lights-fast-blinking-turn-signal.637692/

 

My truck now has 300,000 miles on it and has the original turn signal switch. Does the Hazard Button run through the Turn Signal Switch? Thanks, All! Mike

 

NO. You can completely disconnect the turn signal switch and hazard lights will still run. However you can't do otherwise: turn signal runs through hazard light switch. If you disconnect hazard light switch, nothing will work: hazard nor turn lights.

If hazard light switch is in "Off" position it powers a flasher from 10A Turn fuse power. Then flasher powers turn signal switch which will activate left or right signal lamp.
If hazard light switch is in "On" position it powers a flasher from 15A Horn fuse power. At the same time it activates the flasher powering both left and right signal lamps.

From 99 EWD which is the same for all years except grounding of tail lights in later models.



Later model tail light grounding is different - left light is not grounded directly like on previous models, but through right lamp. I have no clue why Toyota changed that. Seams to be stupid "improvement".