• Troubleshooting the GY6 11-pole Upgrade Installation (charging)

  • Have a technical problem? Ask here.
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 #10728  by Travis @ Buggy Depot
 Tue Aug 08, 2017 1:54 am
Installation guides:

150cc GY6 Stator Installation Guide
https://www.buggydepot.com/tech-center/ ... ion-guide/

BDX 11-pole Stator Plug-n-Play Adapter Installation
https://www.buggydepot.com/tech-center/ ... tallation/

Be sure to read the guides twice, then once more before starting.

Common mistakes (and warranty killers)
  • Be very careful routing your stator wires under the metal clamp band. Don't allow the flywheel to rub any of the wires, or they'll be cut within a few minutes of riding.
  • Be careful not to mix the stator fan bolts with longer ones during reassembly. Using slightly longer bolts at the fan will instantly shred your brand new stator's windings.

Troubleshooting Step 1: Stator voltages

There are 3 yellow wires, and one green wire. Green is ground. Ignore the blue and red wires, they are for ignition.

The 11-pole stator is 3-phase, and each yellow wire is one leg. If you don't know what this means, don't worry about it. This is just to say that it is normal to find continuity between any/all of the yellow wires (and ground).

1. Disconnect your stator plugs.

2. With the engine running, the three yellow wires should output 9vAC to 17vAC depending on how fast your engine is idling. Green should show 0v, and should show continuity to ground of the engine (with the engine off to protect your meter).

Write down the voltages you see during testing.

Troubleshooting Step 2: Plug and play adapter

Make sure that you've connected the adapter exactly according to the instructions.


Warning: Make sure that your stator is connected to plug #1 of the adapter, NOT to your stock harness.

1. Unplug the adapter entirely (including the rectifier). Start your engine. With the engine running, plug in the #1 connector to the stator. If you hear a significant drop of engine RPM as soon as you plug #1, you likely have a defect in the adapter and will need to contact us for more instruction and possible RMA.

If you don't hear any drop, move on to the next step.

2. Make sure the engine is off. Plug #2 to your rectifier, and unplug #1. Repeat step one (start engine and plug in #1). Any drop in RPM? Let us know.

If you don't hear any drop, move on to the next step.

3. Make sure the engine is off again. Plug #2 and #3 to your rectifier, and unplug #1. Repeat step one (start engine and plug in #1). Any drop in RPM? Let us know. If not, move to the next step.

4. Make sure the engine is off again. Plug #2 and #3 to your rectifier, #4 to your original harness, and unplug #1. Repeat step one (start engine and plug in #1). This is the most likely time that you're going to notice a drop in RPM.

Either way, comment below with your voltages and which step above you heard the drop in RPM.

What does a drop in RPM mean?
A dead short somewhere in the harness (or adapter). The short causes enough of a load to drag RPMs down and give us a good indicator that something is wrong. This could be due to a reversed pin, or using rectifier with a non-standard pinout.

Do you have a scooter extension?
Check to make sure that all wire colors match. Any yellow can go to any other yellow. But black is ground and must go to black (or green depending on your harness).


Are you blowing fuses?
If you have a yellow wire on your original harness in connector #4, remove it temporarily. Did the fuse stop blowing? If so, you may have the stator connected directly to your original harness instead of the adapter. Post below and we'll get into some details to figure out exactly what's going on.
 #10735  by Travis @ Buggy Depot
 Tue Aug 08, 2017 6:29 pm
A reminder: Don't use the wrong bolts on the cooling fan during installation of the stator.
Mixing up a longer bolt from somewhere else in the installation will immediately result in stator damage.