GasGas Riders Club Forum  

Go Back   GasGas Riders Club Forum > GasGas Enduro Technical Forums > Enduro Electrical & Wiring

Enduro Electrical & Wiring Lighting, Ignition, Wiring, Plugs, etc.

Thread Tools Display Modes
Old 02-07-2018, 08:41 AM
Vladko Vladko is offline
Join Date: May 2016
Posts: 7
Default Help with SM 125 Halley wiring

Hello guys,

A few months back, I started having an issue where my headlight would go dim and the LED tail light would stop working altogether, it kind of fixed itself after I washed my bike and I just thought nothing of it. After a while, it started blowing my light bulbs whenever it was raining and the bike got wet, or they would just go dim like before and "fix themselves" after a while. I tried spraying contact cleaner on every single connector in existence on the bike and it didn't fix the issue so I stopped replacing the blown bulbs since it got cold and I wasn't riding it anyway.

My bike used to have an electric auto lube pump which was removed by a previous owner, the control box for that pump started smoking one day and the dashboard (Trailtech Vapor) would not work above a certain RPM. I rushed home since I was less than 500m from my garage and removed the control box. The dashboard started working fine after that.

On the next ride, after doing a few 9,000 - 10,000 RPM revs, the dashboard started having issues again, it would not work below say 3,000 RPM and the back light wouldn't turn on until 4,000 - 5,000 RPM. This lead me to believe that I was getting low AC voltage to the regulator, so I decided to check. I measured the voltage between the white and yellow wires and I got a reading of 3 volts when at idle and 9-10 volts while on the pipe, way too low.

I tore the bike down and started cutting the rubber around the wiring loom exposing the wires. I started to check for broken insulation or shorted wires and found none. I decided to hook up the regulator to the bike and test everything. Immediately after starting the bike the regulator started smoking so I shut it off and upon closer inspection I realised that I had switched the yellow and white wires around at the connector right before they enter the loom. I reversed them so that they are connected correctly and tried again, same result. I measured the voltage across the 4 wires that my regulator connector has (Red, Black, Yellow, White). Yellow-White, again 3 volts AC at idle, but measuring Yellow-Black I got a much higher reading which reached 40v AC when revving.

I have a Kokusan ignition with 5 coils (I think) on the stator. I measured the resistances and according to a diagram I found on the internet, they are within range.

My main question is, what are the different wires for?
Red and Green - Hall pick up
Red/Black and Red/White - go into the CDI box
Yellow - Lights??
White - ???

Also, the Red and Black wires which are presumably 12V DC, only go to the Vapor and the "Oil level warning" LED. Do I have another regulator for the lights?

Sorry for the long post.

Reply With Quote

Old 02-07-2018, 09:05 AM
Vladko Vladko is offline
Join Date: May 2016
Posts: 7

There's a pic of the regulator plug and the schematic I found on google.
Attached Images
File Type: jpg 27781491_1606818886063575_1227388442_n.jpg (64.7 KB, 4 views)
File Type: jpg KokusanDigital2005Pro-L.jpg (111.8 KB, 5 views)
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to extract more power from 125 Halley Vladko Enduro Engine - 2 stroke 2 03-09-2017 10:38 AM
GasGas 125 Halley Cylinder Vladko Enduro Engine - 2 stroke 0 05-17-2016 04:09 PM
2002 ec300 light wiring and speedo wiring help needed. andy176 Enduro Electrical & Wiring 0 02-04-2014 08:38 AM
CDI problem halley 450 09? speeddemon Enduro Engine 4 stroke (including EFI & Exhaust) 0 05-15-2012 10:10 AM
New member buying a gas gas halley 450 speeddemon General Discussions & Announcements 5 10-12-2009 04:35 PM

All times are GMT -5. The time now is 04:05 AM.

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2009 -