Left Turn signal flasher location

[gor]

I have a feather/ultra lite
All running lights work
Emergency lights flash
Brake lights work
Right signal flashes
Left signal does not flash

Any thoughts on fixing this issue would be appreciated
I assume I need to replace the flasher but have no idea where it might be
The trailer is completely sealed underneath

[Grumpy]

There is no flasher on your trailer, it is all controlled by your tow vehicle. If your tow vehicle has separate brake lights and turn signals the problem is probably in the adapter that was installed for the trailer lights.

[gor]

Thanks, I guess I'll check the tow connection

[Jagiven]

The is no flasher for the tt, it uses the tv signal.

1st question have you confirmed the light bulb is not bad? If it is good. I would then check the signal, aka, power at the 7 pin on the tv. You can do this with a multimeter or with a 7 pin tester. From there you can decide to inspect the tt or tv, depending on the results.

If you tv, has a factory 7 pin, you will have a separate fuses in the fuse panel under the hood, just for the 7 pin connector. Might be worth checking there.

If the issue is on the tt, could be a corroded ground for the light, corroded pin in the 7 pin connector, last place I would check is the connection between the end of the 7 pin wireharness and the wires that run to the lights inside the tt.

That should get you started.

Good luck.

Added note, just reread your post.

You state the emergency flashers light up on both, light units, but not the left turn signal. To me that would indicate an issue with the tv. I'd start with the fuse box.

What is your tv?

[rdlouks]

Does your TV have separate Brake light and turn signal bulbs? (Amber turn signal red brake light) If so it sounds like a defective module that combine them at the trailer. Hence that is why when you turn on the 4-way hazard flashers both sides flash. I would check with your dealer as to the location of the brake urn signal separator module.

[norty1]

Most trailer light problems will be tied to a poor ground somewhere. Any how, it's a electrical wiring connection somewhere. Verify it works at the trailer connector and work back.

Sometimes the problem is corrosion at the bulb socket.

I carry a 4 pin test adapter. Plug it into a 7 to 4 pin adapter at the truck and you can eliminate the truck in a minute. Here is one, but they are available at any automotive supplier.
https://www.bing.com/videos/search?q...3709&FORM=VIRE

[Sundancer330]

I had a similar problem and found out my truck had separate fuses for each sides turn signal. Look in your tow vehicle manual at the fuse block and locate turn signal fuses, pull and check them.