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Offline mart242

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I ordered some aftermarket LED turn signals for my north american 2017 S1000R since they are not available from the dealer on this side of the planet.  I understand that have two options to make them work properly:
- Add load resistors: in this case, what resistor value is needed?  From what I gathered with google, there were changes for 2017 but I couldn't find a clear thread about what value to use
- Have the dealer change the ECU so that it expects LED turn signals and doesn't raise errors: where is this setting?  it it not accessible with GS911, correct?  I'll need to convince the dealer to do it and would rather have the exact instruction of what they need to do..

Thanks!

Offline SimonUK

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Re: LED lights on 2017 north american: resistor value / ECU setting?
« Reply #1 on: May 19, 2018, 01:10:34 PM »
I took my Xr into the dealers to have them change the settings for LED indicators. The tech looked (he has done it before) and the option has been removed from the menu. I will add that this is in the US, not sure if Canada is the same.

As far as resistors go, Rizoma sell resistors for their LED signals, those should work.

Offline BillB

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Re: LED lights on 2017 north american: resistor value / ECU setting?
« Reply #2 on: May 20, 2018, 02:11:54 AM »
For my 2017 R9T Racer, I installed a set of Rizoma Club LEDs to replace the 10W OEM bulbs and experimented extensively with load resistors.  approx. 39 Ohm, 5W resistors worked well (with ignition off and bike running).  That bike would hyperflash with a current draw below this, and would disable the bulb with a short fault when near 2A. 

They have been on the bike for over a year with no issues.

Here is the post on the R9T forum discussing it:

http://www.ninetowners.com/forum/bmw-r-nine-t-racer/111001-racer-rizoma-side-arm-club-signals-2.html#post783081

Here is the resistor I used:

https://www.digikey.com/product-detail/en/vishay-bc-components/AC05000003909JAC00/PPC5W39.0CT-ND/596727     

Online zombie

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Re: LED lights on 2017 north american: resistor value / ECU setting?
« Reply #3 on: May 20, 2018, 03:25:14 AM »
Not sure about BMW's but on any other bike you just switch the relay...  why mess around with resistors?

Offline BillB

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Re: LED lights on 2017 north american: resistor value / ECU setting?
« Reply #4 on: May 20, 2018, 02:24:25 PM »
*Originally Posted by zombie [+]
Not sure about BMW's but on any other bike you just switch the relay...  why mess around with resistors?

Relay?  BMW, doesn't use relays for this.  Load resistors are necessary because the bike tests the signal circuit for current draw.  It expects a 10W bulb, so when the signal is replaced with an LED, the current draw is too low, and the bike sees this as a bad bulb and warns the rider by hyperflashing.  Also, if the current draw is too high, the bike shuts down the circuit for protection.
   


Offline mart242

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Re: LED lights on 2017 north american: resistor value / ECU setting?
« Reply #5 on: May 22, 2018, 08:36:26 PM »
*Originally Posted by BillB [+]
For my 2017 R9T Racer, I installed a set of Rizoma Club LEDs to replace the 10W OEM bulbs and experimented extensively with load resistors.  approx. 39 Ohm, 5W resistors worked well (with ignition off and bike running).  That bike would hyperflash with a current draw below this, and would disable the bulb with a short fault when near 2A. 
...

Here is the resistor I used:

https://www.digikey.com/product-detail/en/vishay-bc-components/AC05000003909JAC00/PPC5W39.0CT-ND/596727   

Thanks for this detailed info!  I was considering heatsinks but agree with your assessment that you posted in the rninet forum. 

Offline peeti

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Re: LED lights on 2017 north american: resistor value / ECU setting?
« Reply #6 on: June 07, 2018, 09:19:41 PM »
This may be a dumb question, but the OE BMW LEDs are plug and play. No faults thrown, no visible resistors and nothing had to be coded. As someone who has changed to LEDs on cars for years, I know this was oddball, so I suspect each stalk has a small resistor. But with no heat sink or other way to cool it - I'm doubtful that's true even. In fact, the housing is so small, not sure there's room in there for it. I am aware that BMW pulled these from the USA market - but if you can get your hands on some, they were truly a swap replacement. Pricy? yea, but no hassle.

Offline mart242

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Re: LED lights on 2017 north american: resistor value / ECU setting?
« Reply #7 on: June 07, 2018, 09:22:30 PM »
*Originally Posted by peeti [+]
In fact, the housing is so small, not sure there's room in there for it. I am aware that BMW pulled these from the USA market - but if you can get your hands on some, they were truly a swap replacement. Pricy? yea, but no hassle.

Really pricey here in Canada.  $60 each, so $240 vs ~$50 for a 4 pack..  I opted for the chinese ones and will take care of the resistors myself.

Offline peeti

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Re: LED lights on 2017 north american: resistor value / ECU setting?
« Reply #8 on: June 07, 2018, 09:26:01 PM »
I did see another post just minutes later that Ali Express has them for $33US per pair. That's too good to pass up. Good call! The poster on that thread said they too were plug and play with no codes no resistors as FYI.

Offline mart242

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Re: LED lights on 2017 north american: resistor value / ECU setting?
« Reply #9 on: June 07, 2018, 09:35:17 PM »
You can even get two pairs for a bit less:
https://www.ebay.ca/itm/372165536078

I have them in my garage.. gotta try them to see if resistor is needed or not but chances are the posted in the other thread did not require resistors because he is in AUS, the ECU may be programmed differently. 

 


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