[Electrical Help Needed] 12v LED Diode kit for LED lights not working properly. Did I wire it wrong ?

Hello everyone,

Hopefully people with good electrical knowledge can help out. I have a 1982 Honda CB125s and it came with a 6V system. I am trying to complete a 12v conversion but ran into an issue with the turning signals. The bike has a 12v front light, 12v battery, 12v rectifier regulator, the correct LED flasher unit.

Motorcycles that use a single bulb for a turning signal indicator run into an issue when you convert to LED : all your indicators flash at once because power is recirculated to the other flashers. On motorcycles with left and right arrows for signal indicator on the dash this doesn't happen.

The solution provided is to splice in a diode kit into the front turning signals and dash indicator.

Two wires run from the indicator bulb, one orange and one baby blue. The instructions are to take the black ground from the diode kit and splice that from a ground wire to one of the two dash indicator wires. I spliced a green frame-ground wire to the orange wire from the indicator bulb. Then you take the kit's other wire that is a Y segment and you splice that into the other indicator wire and then the two ends to each respective right and left turn signal wire.

Here is a pic of my wiring diagram and the splice work I did on it : https://imgur.com/a/XTmwIrG Here's the other side of the diagram if you need to consult : https://imgur.com/a/Pq1BhBm

After completing the job it should have worked but instead this is what happens :

When signaling left it correctly functions, when I signal right the rear brake light pulses and both right indicators stay off. I thought maybe it was the rear light and removed the bulb but that just stops it from functioning and the right indicators still don't function.

From the video guides and the diode kit instructions it does not mention this possibility....they just mention that if it flashes too fast you need a different flasher unit but mine flash at the correct speed.

Any help is greatly appreciated, I am capable of doing the actual splice and soldering work but am not a pro when it comes to understanding the principles behind electrical stuff.

Thanks for reading.

Posted Jul 12, 2022, 4:44 PM UTC

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licking-windows•

Is the diode installed with correct polarity?

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CndConnectionOP'10 Royal Enfield C500 + '81 Honda CB125S•

Can you explain further ? The diode kit is pre-assembled and looks like this : https://bikemaster.com/bikemaster-turn-signal-diode-kit-266288.html

In the instructions it doesn't mention polarity or needing to check for it before installation.

1