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Old 09-29-2018, 01:43 PM   #1
gingaw
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Default G2A voltage regulator

Has anyone drawn up a schematic of the subject regulator? Mine appears to be OK yet battery voltage climbs to 17V+ when running.
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Old 09-29-2018, 02:14 PM   #2
gingaw
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Default Re: G2A voltage regulator

Replying to my own thread!
If I go to a solid-state regulator, does someone have the correct terminal-to-terminal connections?
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Old 09-29-2018, 04:16 PM   #3
mikeasis
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Default Re: G2A voltage regulator

the voltage regulator on a gas cart?

I belive Yamaha set them up 14.5-17.5? All the stop and go that a golf cart does along with the pedal start it helps keep the battery charged.
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Old 09-29-2018, 04:48 PM   #4
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Default Re: G2A voltage regulator

You should check the voltage regulator as explained in the service manual:
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File Type: jpg regulator.jpg (108.8 KB, 0 views)
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Old 09-29-2018, 11:37 PM   #5
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Default Re: G2A voltage regulator

99999-JC220-00 is a part number that will get you a plug with the 3 wires attached (with matching wire colors as your existing wires). Plugs right into the Yamaha regulator used on G9 and newer models. That's one of the benefits of being a trained and Yamaha certified, you get the inside scoop on neat little stuff like this.
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Old 09-30-2018, 04:42 AM   #6
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Default Re: G2A voltage regulator

Quote:
Originally Posted by cgtech View Post
99999-JC220-00 is a part number that will get you a plug with the 3 wires attached (with matching wire colors as your existing wires). Plugs right into the Yamaha regulator used on G9 and newer models.
??? Would you, please, explain what this "voltage regulator repair kit", I do not understand its purpose...
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Old 09-30-2018, 09:17 AM   #7
smallblock450sl
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Default Re: G2A voltage regulator

The way the wire harness was installed, one of the 3 wires could brake at the connector while driving the car. Yamaha came up with this "fix" so if they broke you could fix the problem rather then change out the whole wire harness. I could think of a few more "fix's" they could come up with! OP- see the directions above on how to "adjust" the G2 Hatatchi voltage regulator,
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Old 09-30-2018, 10:21 AM   #8
gingaw
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Default Re: G2A voltage regulator

Unable to locate the 99999-JC220-00 regulator at the Yamaha parts houses. Do you have another P/N available or recommend a source?
Thx.
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Old 09-30-2018, 10:48 AM   #9
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Default Re: G2A voltage regulator

Quote:
Originally Posted by gingaw View Post
Unable to locate the 99999-JC220-00 regulator at the Yamaha parts houses. Do you have another P/N available or recommend a source?
Thx.
Google it and you will find plenty of places where you can order it (partzilla, 2wheelpros, etc... even on eBay).
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Old 09-30-2018, 10:51 AM   #10
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Default Re: G2A voltage regulator

Quote:
Originally Posted by smallblock450sl View Post
The way the wire harness was installed, one of the 3 wires could brake at the connector while driving the car. Yamaha came up with this "fix" so if they broke you could fix the problem rather then change out the whole wire harness.
If it is just a question of connectors, I cannot see the need for this part. If there is such a "weakness", then it can easily be addressed quite simply (in advance of course)...
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