LED Flasher

[Brian@algona]

This shouldn’t be hard… I’m installing a LED flasher on an M Farmall. 12 volt positive. Power to fuse to LED relay to switch to flasher. The flasher lights up but won’t flash. What am I missing?

 

[Roger in Iowa]

12 negative ground. Don't think LEDs like positive ground??

 

[Stan Coryell]

Most, if not all, LEDs are polarity sensitive.

 

[Jim.ME]

Is it an actual electronic flasher for LEDS? Brand and part number? Most mechanical flashers will not work LEDs they need one or two incandescent bulbs in the circuit to make enough draw to make the flasher work.

 

[greenmech]

This shouldn’t be hard… I’m installing a LED flasher on an M Farmall. 12 volt positive. Power to fuse to LED relay to switch to flasher. The flasher lights up but won’t flash. What am I missing?

When I put LED lights in my old Ford car I had to put a resister in line too. Ron MN

 

[a49deere]

They actually make a LED flasher made for positive ground systems.

 

[Hemmjo]

12 negative ground. Don't think LEDs like positive ground??

Individual LED's are polarity sensitive, BUT the LED array is typically connected internally so there is a positive and negative lead. Or Socket. Since very few modern vehicles are positive ground, The negative lead is typically connected to the ground lug on the light body. As mentioned previously, most LED flasher issue are related to low current draw