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Hooked
2006 LX 150, 2008 Buddy 125
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Hooked
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Joined: UTC
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Location: Eugene, Oregon
UTC quote
Am wanting to check my stator and voltage regulator but not sure where the voltage regulator is mounted so I can disconnect the stator from the regulator to get at the wires and check the resistance. (2006 LX 150)

In looking at the shop manual can't seem to find any pictures of the regulator for the LX 150. There is an electrical connection of some sort mounted in rubber near the SAS valve but not sure what that is.

Can anyone direct me to the connection between the stator and regulator? Sorry if it's in the manual, I certainly could have missed it.
Thanks
@mjrally avatar
UTC

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73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 61 Ser 2, 65 Silver Special, 90 V5N 50, 01 ET2, 2015 HD Road Glide Special
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@mjrally avatar
73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 61 Ser 2, 65 Silver Special, 90 V5N 50, 01 ET2, 2015 HD Road Glide Special
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UTC quote
The regulator is located in the legshield behind the glovebox. It's square shaped with fins on it. The rubber connections by the SAS are all the stator/harness connections.
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2006 LX 150, 2008 Buddy 125
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MJRally wrote:
The regulator is located in the legshield behind the glovebox. It's square shaped with fins on it. The rubber connections by the SAS are all the stator/harness connections.
Thanks. So, can I check the resistance in the stator wires by disconnecting the boot by the SAS or do I need to access the regulator?
@mjrally avatar
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@mjrally avatar
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I'd check it by the SAS. That way there's no possible interference measuring through the harness.
Random photo off the Internet of a stator and voltage regulator. Wires are different colors on yours
Random photo off the Internet of a stator and voltage regulator. Wires are different colors on yours
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Hooked
2006 LX 150, 2008 Buddy 125
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Posts: 425
Location: Eugene, Oregon
 
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UTC quote
MJRally wrote:
I'd check it by the SAS. That way there's no possible interference measuring through the harness.
Ok, thanks for the help.
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2006 LX 150, 2008 Buddy 125
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UTC quote
At the stator to regulator plug connection, can anyone tell me where to place voltmeter leads to check for AC voltage from the stator?

In the picture the top two wires go the battery (I think). The bottom three wires are from the stator to feed the regulator.

Not sure how to connect my voltmeter to check AC voltage from stator.
Thanks for the help.
Forum member supplied image with no explanatory text
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Hooked
2006 LX 150, 2008 Buddy 125
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Hooked
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Location: Eugene, Oregon
UTC quote
MJRally wrote:
I'd check it by the SAS. That way there's no possible interference measuring through the harness.
MJ - Decided to take off the glovebox since I had to install a new trim piece anyway. Not sure how to check the voltage coming from the stator, hoping someone can tell me to connect the VM leads.
Thanks for all your help.
@mjrally avatar
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@mjrally avatar
73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 61 Ser 2, 65 Silver Special, 90 V5N 50, 01 ET2, 2015 HD Road Glide Special
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UTC quote
Here's how I'd go about it with a multimeter. This may be in the service manual PDFs but I'll summarize it so you don't have to search. These are regulator/rectifiers so they regulate AC voltage as well as convert AC to DC and charge the battery. Looks like there are 5 wires into that block so I've labeled them 1-5. In the vintage scoots they only use 4 so you might have one extra AC in.

Step 1 would be to find the ground wire (usually black insulation but a continuity check will tell you for sure)

Step 2. Find the charging wire to the battery. (Usually red but switching your meter to DCv will tell you for sure.

Step 3. Start the scooter up and switch your meter to ACv and find which wires produce AC voltage at idle. This is unregulated AC voltage or you could just say AC in to the regulator. In theory if you revved it up, voltage would keep climbing up to say 20V AC. Well past what your bulbs are rated at and they would burn out IF your regulator failed. You might have two of these wires since you have 5 wires, not 4.

Step 4 would be to turn off the scooter. Plug the block into the regulator. Restart it and then find the Regulated AC wire. That's AC out of the regulator. Revving up the scooter your meter should build and build and then stop at 12-14V AC keeping the bulbs safe from blowing. Excess AC voltage is clipped and then sent to the ground wire.

Step 5 would be to switch your meter back to DCv and measure voltage at the battery, scoot turned off. Start and then rev the scooter. Measure DCv again and it should be higher than what it was moments before. 14V DC is good.

If you had bad AC voltage in, it would display a stator/wiring problem. Bad DC voltage at the battery terminals could be a failed rectifier. Burned out Lights could be a failed regulator (AC out). Finally if everything acts like it should (AC voltage is within limits and your DC voltage is charging) your regulator/rectifier is A ok and you could assume the stator is ok as well. Best way to check the stator wiring and coils would be resistance checks.

If this was hard to understand or you still have questions, PM me or search YouTube.
Forum member supplied image with no explanatory text
@motovista avatar
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UTC quote
The Service Manual fur the LX 150 tells you which wires are which and how to test them with a voltage meter.
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2006 LX 150, 2008 Buddy 125
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UTC quote
MJ - Thanks for the very detailed information, I'll proceed as you suggested. Good riding.
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Hooked
2006 LX 150, 2008 Buddy 125
Joined: UTC
Posts: 425
Location: Eugene, Oregon
 
Hooked
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Posts: 425
Location: Eugene, Oregon
UTC quote
Motovista wrote:
The Service Manual fur the LX 150 tells you which wires are which and how to test them with a voltage meter.
I have the pdf of the workshop manual (243 pages), is the service manual different or is it the same thing? Sorry, still learning the terminology.
@acox6252 avatar
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2007 LX 150
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Location: Mansfield, GA
 
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@acox6252 avatar
2007 LX 150
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Location: Mansfield, GA
UTC quote
Late reply but the regulator on my 2007 LX 150 can be accessed through the front horn cover...remove the horn and there it is.
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Hooked
2006 LX 150, 2008 Buddy 125
Joined: UTC
Posts: 425
Location: Eugene, Oregon
 
Hooked
2006 LX 150, 2008 Buddy 125
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Posts: 425
Location: Eugene, Oregon
UTC quote
acox6252 wrote:
Late reply but the regulator on my 2007 LX 150 can be accessed through the front horn cover...remove the horn and there it is.
No problem, thanks for the reply. I ended up taking off the leg shield anyway to replace a trim strip. Next time I'll do it your way, the leg shield was a pain go get back on and I didn't get it lined up perfectly, now it squeaks.
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