2019 Kenworth T680 right rear turn signal does not blink

All I can tell you is the diagram on the fuse panel door of a Kenworth is useless. I’ve got five of them in the yard and the diagram on the panel doors doesn’t resemble the electrical system in any of them. Without a VIN specific service manual a lot of it comes down to pulling fuses, breakers and relays until you get the right one by mistake. On yours, being a newer truck, I might start looking at the grounds on the signal circuits. The electronic flasher units in the newer trucks are a little sensitive to bad grounds.

 

You need to check blinker fluid.
It could be low on that side.

 

The fuse panel diagram in my 2021 T680 correctly described the fuses. There are 2 fuse panels, or more. One was about where the clutch pedal is located. Another is in a black plastic box, on the engine side of the firewall next to the steering shaft.

 

First time for everything I guess. I’ve had KW trucks since ‘84, got 5 in the yard now. I’ve never seen one that was right.

 

What did you find out about your blinker ?
Thanks mark

 

i’ve got a ‘21 - and i think it’s bulb specific

got a ‘21 and the bulb would not flash - but stayed on. In my case it was bulb specific- meaning it had to be the exact factory one. I’d change both sides - think it has to do with the module finding the right resistance - so the wattage of the bulb has to be factory

 

Post is almost 2 years old. If they haven't fixed it by now. Then I hope their no longer a driver