I recently working on to checking why my head light not bright enough and after replace a new stator & rectifier I had some question for any rectifier expert.

Below is my current brand new WStandard rectifier and the battery charging output which is below the red wire working fine charging my battery around 14.5V+- but the wire above the battery charging wire which is the power output for many electrical component such as key switch or head light only output around 4-5v so why is that ??


Feel free to PM me for further private discussion if prefer. Thanks first

This post has been edited by bluecat68: Oct 14 2024, 10:10 PM

what bike bro, which wire is from your stator.?

white red, white black, black & red.

can check 1st without load output?

Bike is Kriss MR1. Pretty sure black is ground and the red is output, will confirm which one of the other 2 is from stator, my eye not working so good at night.

By the way I suspect my headlight still dim despite new rectifier & stator is because of wire grounding issue ..

This post has been edited by bluecat68: Oct 14 2024, 10:05 PM

if you suspect wire grounding issue, you can check resistance from battery terminal to headlight.

should be below 1-2 ohm.

But how to connect ?? I mean multimeter red to where and black to where ?? Any youtube video related to this ??

you can watch on how to measure the resistance here.



will need to put black probe on battery negative and headlight socket ground.

if unsure, take picture of the headlight socket.

This post has been edited by hr_elie: Oct 14 2024, 10:51 PM

Quite a distance between battery negative and headlight socket, looks like I have quite some disassembly work to do tomorrow. Thanks first

how you measure the power output?

Ok here is the update.

I set the ohms to 200


and here is the result:
Wire 1: 22.3
Wire 2: 1.0
Wire 3: 0.3


Not sure if I doing it correctly but I put the black on the battery negative and put the red into that 3 wire for the reading

This post has been edited by bluecat68: Oct 14 2024, 11:52 PM

Multimeter

ok

First of all this is the socket of my new stator. Yellow should be the output for head/tail light and white for charging and the blue should be the ground.


Both yellow and white have AC value which can rev over 20v which is more than enough to burn the bulb without the rectifier.

Now about the rectifier.

1. The red wire have very less DC value but over 10v AC value
2. The white red wire has AC value which can rev over 20v if not connected to the rectifier
3. The white battery charging wire is the only one with DC value around 13.5v and stay around 14.5v when rev up.

Now about the headlight socket test (with rectifier ON).
1. If low beam is chosen then the corresponding pin will have a steady 10v AC with less than 1v DC but will go 13v AC and about 2.5v DC respectively when rev up.
2. Same thing happen if high beam is chosen.


3. Finally, the chosen pin receive over 20v AC if the rectifier is unplug.

So, is this how Kriss MR1 headlight power suppose to work like ?? If yes so be it but if no pls do tell. Thanks first

Have a great everyday.

This post has been edited by bluecat68: Oct 15 2024, 02:17 PM

good update
change the bulb to Osram LED it can accept AC supply

I try led bulb before, once but the bulb last less than 3 weeks, not Osram though.

check your kriss mr1 stator coil magnet some bike has 3 coil on the stator.. u have to replace coil for light..

DC LED bulb will blow in a short while

https://www.osram.com/ecat/LEDriving%20HLM%...16/ZMP_4064740/

Don't think that bulb suit the socket. Must be 3 legs.


This post has been edited by bluecat68: Oct 15 2024, 03:49 PM

check the other side, what is the bulb code