https://www.superbrightleds.com/moreinf ... l-led/221/ It is important to know the polarity of the LED and also on the board the correct position to install the LED. If you look closely at the ckt board picture, I marked the + and - sides of the ckt board. To determine the actual LED, I used an 9 volt battery with a couple wire and then marked the negative side on the base of the LED. Also it is necessary to remove from the LED a small portion of the "wings" on the LED base (will try to get a picture of the modification)
Once the LED are installed you can connect the ckt board back to the radio to ensure the light are properly inserted and working. If not then you just need to check the polarity again and reinsert the LED. Once completed and working, it is just a matter of putting the radio back together , reinstalling into the shelter and installing the shelter I was happy with the way it looks on the bike...
Now to complicate things..I decided to work on the left handlebar controls (the more difficult of the two) this is not for the faint of heart as you have to completely disassemble the the controls...CAREFULLY! In the control are, if I counted correctly 9 bulbs that need replacement. I had used component 3mm flat top LEDs I had on hand and resistors, but they can be purchased with the dropping resistor already assembled
https://www.amazon.com/gp/product/B07DD ... UTF8&psc=1
What is being removed from the controls are light holders. Pictured is just a couple of them, some can be a real bear to remove! The LEDs fit, but I used a bit of hot glue to ensure that they stayed in place.
It is then the matter of getting all the lights replaced, wiring out of the way and the control all buttoned up. It was a challenge, but I think the final result is worth the work and aggravation. I haven't done the right side unit yet, but I believe it only has 4 light that need to be changed!