What is the Small black box on top of the rear wheel well on Yamaha G1 gas

kjackson7710 · 09-27-2011, 08:12 PM

I am new with carts and bought a yamaha g1 from a friend who could not get the cart to get spark. He says he checked the generator/motor, tried three different coil packs (although they were not new but did work when taken of other machines) and he then found that it was hot up until the small black box on the rear wheel well near the solinoids. Can anyone give me some suggestions on what the problem could be and what that box is? something like a CDI box on a snowmobile? Thanks for any help please excuse my ignorance.

custom carts · 09-27-2011, 08:41 PM

That little box give you spark its a ignition relay they cost about $110 oem# 4u8-81950-02-00 try tapping it while turning the motor over you will get some spark

paulhut · 09-27-2011, 09:59 PM

That little black box is the CDI.

Some G1s had a relay on the wheel well also. The CDI has 6 wires and the relay has 4.

There is also a voltage regulator with 3 wires and further back is a reverse beeper with 2 wires.

You should check out this post to determine the year of your G1 and then this post for a wiring diagram.

rherzner · 10-02-2011, 07:21 AM

maybe you are looking @ the voltage regulator

?????????

kjackson7710 · 10-02-2011, 12:48 PM

I'll post a pic. thanks for the info so far.

kjackson7710 · 10-04-2011, 08:31 AM

http://i1091.photobucket.com/albums/...n7710/cart.jpg

Here is a pic of the right rear fender and the black box i was talking about. It does have 6 wires so I am guessing it is a CDI although i still dont know what model g1 it is because there are no stickers on it anylonger.

paulhut · 10-04-2011, 12:30 PM

The VIN for the G1 is stamped on the metal tube above the gearbox between the rear shocks. It should look like J10-006773 (my G1's VIN)
Take that number and enter it into this website to find the year: http://www.golfcarcatalog.com/index....ormation_id=29

Todd Dolfi · 10-04-2011, 03:41 PM

the gold box is the voltage regulator and black box is CDI

makobuggie · 10-04-2011, 11:01 PM

I found my serial # drivers side rear right by the bumper braket on the frame, i have a 81 g1, it dont have a black box like that, i only have the cdi box, i replaced, starter, coil. Relay, hope to get it running this weekend, good luck.

kjackson7710 · 10-13-2011, 11:20 AM

Do any of you guys buy/sell parts on here? If so G1 CDI???

09-27-2011, 08:12 PM	#1
kjackson7710 Not Yet Wild Join Date: Sep 2011 Posts: 6	What is the Small black box on top of the rear wheel well on Yamaha G1 gas I am new with carts and bought a yamaha g1 from a friend who could not get the cart to get spark. He says he checked the generator/motor, tried three different coil packs (although they were not new but did work when taken of other machines) and he then found that it was hot up until the small black box on the rear wheel well near the solinoids. Can anyone give me some suggestions on what the problem could be and what that box is? something like a CDI box on a snowmobile? Thanks for any help please excuse my ignorance.
kjackson7710 Not Yet Wild Join Date: Sep 2011 Posts: 6

09-27-2011, 08:41 PM	#2
custom carts THE CUSTOM KID Join Date: Oct 2008 Location: Tallahassee Florida Posts: 820	Re: What is the Small black box on top of the rear wheel well on Yamaha G1 gas That little box give you spark its a ignition relay they cost about $110 oem# 4u8-81950-02-00 try tapping it while turning the motor over you will get some spark

09-27-2011, 09:59 PM	#3
paulhut Not Yet Wild Join Date: Sep 2011 Location: Portland, OR Posts: 23	Re: What is the Small black box on top of the rear wheel well on Yamaha G1 gas That little black box is the CDI. Some G1s had a relay on the wheel well also. The CDI has 6 wires and the relay has 4. There is also a voltage regulator with 3 wires and further back is a reverse beeper with 2 wires. You should check out this post to determine the year of your G1 and then this post for a wiring diagram.

10-02-2011, 07:21 AM	#4
rherzner Not Yet Wild Join Date: Sep 2011 Location: cincinnati ohio Posts: 49	Re: What is the Small black box on top of the rear wheel well on Yamaha G1 gas maybe you are looking @ the voltage regulator?????????

10-02-2011, 12:48 PM	#5
kjackson7710 Not Yet Wild Join Date: Sep 2011 Posts: 6	Re: What is the Small black box on top of the rear wheel well on Yamaha G1 gas I'll post a pic. thanks for the info so far.
kjackson7710 Not Yet Wild Join Date: Sep 2011 Posts: 6

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10-04-2011, 08:31 AM	#6
kjackson7710 Not Yet Wild Join Date: Sep 2011 Posts: 6	Re: What is the Small black box on top of the rear wheel well on Yamaha G1 gas http://i1091.photobucket.com/albums/...n7710/cart.jpg Here is a pic of the right rear fender and the black box i was talking about. It does have 6 wires so I am guessing it is a CDI although i still dont know what model g1 it is because there are no stickers on it anylonger.
kjackson7710 Not Yet Wild Join Date: Sep 2011 Posts: 6

10-04-2011, 12:30 PM	#7
paulhut Not Yet Wild Join Date: Sep 2011 Location: Portland, OR Posts: 23	Re: What is the Small black box on top of the rear wheel well on Yamaha G1 gas The VIN for the G1 is stamped on the metal tube above the gearbox between the rear shocks. It should look like J10-006773 (my G1's VIN) Take that number and enter it into this website to find the year: http://www.golfcarcatalog.com/index....ormation_id=29

10-04-2011, 03:41 PM	#8
Todd Dolfi Gone Wild Join Date: Dec 2009 Location: Ohio Posts: 1,143	Re: What is the Small black box on top of the rear wheel well on Yamaha G1 gas the gold box is the voltage regulator and black box is CDI

10-04-2011, 11:01 PM	#9
makobuggie Gone Wild Join Date: Jul 2011 Posts: 389	Re: What is the Small black box on top of the rear wheel well on Yamaha G1 gas I found my serial # drivers side rear right by the bumper braket on the frame, i have a 81 g1, it dont have a black box like that, i only have the cdi box, i replaced, starter, coil. Relay, hope to get it running this weekend, good luck.
makobuggie Gone Wild Join Date: Jul 2011 Posts: 389

10-13-2011, 11:20 AM	#10
kjackson7710 Not Yet Wild Join Date: Sep 2011 Posts: 6	Re: What is the Small black box on top of the rear wheel well on Yamaha G1 gas Do any of you guys buy/sell parts on here? If so G1 CDI???
kjackson7710 Not Yet Wild Join Date: Sep 2011 Posts: 6

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