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Old 28-12-2016
450EXCR 450EXCR is offline
dbw Pro
Join Date: Jan 2015
Posts: 32
KTM LED indicators

Hi all,

I recently bought some LED front and rear indicators for my KTM 450 EXC and cant get them to work properly. With only the fronts connected they seem to work but as soon as i connect the rears aswell, they just got solid yellow when switched on, no flashing. Ive got a 2-pin LED flasher unit off eBay fitted so i dont know what the deal is? I had it setup and working with LED indicators in the past but the bike was stolen and trashed. When i got it back the indicators were smashed off and the LED flasher gone. What else could it be? I dont remember doing anything else last time I did this.
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Old 29-12-2016
kim80y kim80y is offline
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Join Date: Apr 2012
Posts: 282
I'd be wondering about the flasher.....
CURRENT STABLE____2015 KTM 300 "Slavens". 1986 Yamaha YZ490-"Thunder" with Full Road Rego!!. 1981 Yamaha IT250H, 1982 Yamaha IT 250J, 1975 Yamaha MX400B, Deltek Rockhopper X2, 2009 Yamaha PW50, 1984 Yamaha XT 250 "Farm Bike"
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Old 29-12-2016
450EXCR 450EXCR is offline
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Join Date: Jan 2015
Posts: 32
Yeah i was thinking about it this morning and my road bike has LED indicators all round. Might pull the flasher off and hope its a 2-pin also to test the theory.
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Old 29-12-2016
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Sideshow Sideshow is offline
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Join Date: Dec 2013
Location: Sunshine coast
Posts: 824
I've read before something about disconnecting the single indicator light near the speedo or fitting a diode or 2.
XL70. YZ80. DT250. KDX200. KTM640. KTM300
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Old 29-12-2016
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Nutty Nutty is offline
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Join Date: Apr 2006
Location: Shoalhaven NSW
Posts: 11,210
The flasher unit is unsuitable.

LED flasher units should ideally be 3 pin jobs. Most 2 pin units are current controlled, as is the one you have. As the extra current of the rear lamps flows, the sequencer circuit goes into full 'mark' mode. This usually happens when the current load is too high for the switching circuit.

Buy an electronic 3 pin unit and run an earth to it or use lower current LEDs.
Current dirtbike: 2017 450SX
Current road bike: 2011 FLHRC-Police spec
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Old 31-12-2016
450EXCR 450EXCR is offline
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Join Date: Jan 2015
Posts: 32
I actually managed to get them working with a different 2-pin connector. Im assuming its rated for a higher current than the cheapy i had in 1st.
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