Leds

[MaplesyrupNhunting]

Hey everyone, so I upgraded my headlights to LEDs, 0 issues.
I upgraded my turn signals to LEDs, and they work fine in every use , but mirror markers/flashers hyper flash and in cluster tells me I have 2 burnt out turn signals as well as flasher sign going fast (in cluster)

I did not get resistors as it's the "wireless" style bulbs, and I did make sure to buy canbus style lights from ALLA lighting.

Does anyone know of a dealer code to have truck read LED turn signals, or am I stuck getting resistors?
TIA
2020 tradesman 2500 6.7L

 

[2manyprojects]

I ran into an issue with "CK" vs "non-CK" bulbs. This has to do with where the pos and neg tabs are on the bulbs in relation to the socket. Even though the LED Turn signal / side marker bulbs are CANBUS compatible, they hyper flashed until I got this sorted out. I'm not aware of any dealer code that would eliminate this, as the CANBUS system is basically the operating system for the truck electrical.

LED turn signal thread

 

[MaplesyrupNhunting]

I ran into an issue with "CK" vs "non-CK" bulbs. This has to do with where the pos and neg tabs are on the bulbs in relation to the socket. Even though the LED Turn signal / side marker bulbs are CANBUS compatible, they hyper flashed until I got this sorted out. I'm not aware of any dealer code that would eliminate this, as the CANBUS system is basically the operating system for the truck electrical.

LED turn signal thread

What did you do to sort out the issue?

 

[Jimmy07]

Hey everyone, so I upgraded my headlights to LEDs, 0 issues.
I upgraded my turn signals to LEDs, and they work fine in every use , but mirror markers/flashers hyper flash and in cluster tells me I have 2 burnt out turn signals as well as flasher sign going fast (in cluster)

I did not get resistors as it's the "wireless" style bulbs, and I did make sure to buy canbus style lights from ALLA lighting.

Does anyone know of a dealer code to have truck read LED turn signals, or am I stuck getting resistors?
TIA
2020 tradesman 2500 6.7L

There is no dealer code for this that they can add. You have set the front turn signals to LED using AlfaOBD. This will shut off the PWM for the turn signal circuits that is causing the hyperflash. The bulbs you bought just aren’t smoothing out the PWM enough. That’s what the “canbus” part of the description means, even though canbus has nothing to do with exterior lighting circuits.
Otherwise, you are going to need resistors.

 

[2manyprojects]

What did you do to sort out the issue?

See post #5 in the thread I linked.

 

[Moto95]

I ran into an issue with "CK" vs "non-CK" bulbs. This has to do with where the pos and neg tabs are on the bulbs in relation to the socket. Even though the LED Turn signal / side marker bulbs are CANBUS compatible, they hyper flashed until I got this sorted out. I'm not aware of any dealer code that would eliminate this, as the CANBUS system is basically the operating system for the truck electrical.

LED turn signal thread

Not to do too much thread necromancy here but thanks for posting this. Ran into this exact same issue on my 24 where after a couple cycles of using the turn signals my 7443 LED "Canbus Compatible" LED bulbs would hyperflash and only illuminate one of the two bulbs under the headlight. Checked the order and I purchased non-CK which explains the issue.