Topic: LED conversion kit diode?

[MLW9110]

I got an LED conversion kit from Common Motor Collective for my 1977 CB550F.

https://www.common-motor.com/honda-led-upgrade-kit-cb550-cb550k-cb550f-cb750?srsltid=AfmBOoozNQd5E2uuGHMWjuXob4Yu0oLHxZ4doWO1lPPcbbdRixlMEKRL

After swapping all the bulbs the turn signals aren't working right. The kit includes a diode for installation on a bike with a single turn signal indicator. My bike has an indicator for each side. I haven't been able to find any information on installing the diode on my bike. An electronic flasher unit came with the kit and works ok.

Before I chase anything else, does anyone know if I need to install the diode and how to do it?

[bryanj]

The diode is only for bikes with only one indicator repeater not the one with two

[scottly]

What doesn't work right?

[MLW9110]

What doesn't work right?

Signals wouldn't flash. The flasher unit that came with the kit failed.
Worked ok with incandescent bulbs and original thernal flasher. Buzzer worked also.

I took an electronic flasher off one of my other bikes and it worked but the signal lights were flickering and buzzer was intermittent. I disconnected the buzzer and the led bulbs flash normally now.

The buzzer must draw too much current and keep the flasher from working right and causing the bulbs to flicker. I had a different buzzer left over from my boat, it worked ok. The buzzer was annoying anyway so I will leave it disconnected.

Another problem I noticed is the stop/tail light barely got brighter when the brake is applied. I put a different kind of led in and it gets much brighter when brake is applied.

I spent way too much time working through this. Hopefully this will help someone out. If a CB550F has separate turn signal indicators, the diode in the kit isn't needed and the buzzer will have to be disconnected.

[kerryb]

My recent experience with LED turn signals and flashers ended with a three wire electronic flasher from NAPA for about $17. Finally working right with the stock buzzer and diy indicator panel (2 turn indicators).  The previous 2-wire electronic flashers would only work with incandescent bulbs.  I suppose they would have worked with a load resistor, but the idea was to reduce the load!

[MLW9110]

I got an explanation from Common Motor today. They are going to send me a replacement flasher. The also verified that the buzzer causes problens and that the diode isn't needed for a bike with two turn signal indicators.

I'm ok with the leds supplied except for the stop/tail light. There isn't enough difference in brightness between the tail light and the brake light. It's a safety issue. I'm going to use a different bulb there.

[kerryb]

I had the same concerns, then I saw the turn signal bulb display at the harley dealer.  I’m using one turn signal bulb for a standard harley housing.  It is so bright on the brake setting that I warn people not to look into it while turning on.  It will even get the attention of a soccer mom on the phone in her minivan, just before she hits you.