Sold / Found / Inactive - GN250 TCI Jumper Harness (Gonzo Pigtail)

Price
$30
Location
Coldwater, Mississippi
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Location
Coldwater, Mississippi
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Since I had a need for these, I made several. This harness will allow you to run a Suzuki GN250 TCI on your 1980 through 1983 XS650. The GN250 box will directly replace the Yamaha XS650 TCI. The TCI box IS NOT INCLUDED. You can buy one here:

CDI Ignitor Box Digital Ignition Fit for Suzuki GN250 Motorcycle


The harness is about ten inches long and the wire colors match the XS650 wiring diagram. The TCI side is a Yazaki locking connector. The motorcycle side is a Sumitomo locking connector. What's pictured above was tested on my motorcycles.

DSCF0041.JPG


I will need to know whether your XS650 has a six pin or eight pin connector. The 80/81 bikes are six pin. The 82/83 Heritage Specials are eight pin. I have a limited number of each and I'll pin to order.

I will ship to you for $30.00 if it can get to you in a USPS Flat Rate Box. All others, $20 plus shipping or $20 at my door.

The TCI box is not included. The pictures are to clarify what this harness fits.

DSCF0043.JPGDSCF0044.JPGDSCF0045.JPG
 
View attachment 329471
Since I had a need for these, I made several. This harness will allow you to run a Suzuki GN250 TCI on your 1980 through 1983 XS650. The GN250 box will directly replace the Yamaha XS650 TCI. The TCI box IS NOT INCLUDED. You can buy one here:

CDI Ignitor Box Digital Ignition Fit for Suzuki GN250 Motorcycle


The harness is about ten inches long and the wire colors match the XS650 wiring diagram. The TCI side is a Yazaki locking connector. The motorcycle side is a Sumitomo locking connector. What's pictured above was tested on my motorcycles.

View attachment 329472

I will need to know whether your XS650 has a six pin or eight pin connector. The 80/81 bikes are six pin. The 82/83 Heritage Specials are eight pin. I have a limited number of each and I'll pin to order.

I will ship to you for $30.00 if it can get to you in a USPS Flat Rate Box. All others, $20 plus shipping or $20 at my door.

The TCI box is not included. The pictures are to clarify what this harness fits.

View attachment 329473View attachment 329474View attachment 329475
Great offer Marty. You should shift a few I think. 🤔
 
View attachment 329471
Since I had a need for these, I made several. This harness will allow you to run a Suzuki GN250 TCI on your 1980 through 1983 XS650. The GN250 box will directly replace the Yamaha XS650 TCI. The TCI box IS NOT INCLUDED. You can buy one here:

CDI Ignitor Box Digital Ignition Fit for Suzuki GN250 Motorcycle


The harness is about ten inches long and the wire colors match the XS650 wiring diagram. The TCI side is a Yazaki locking connector. The motorcycle side is a Sumitomo locking connector. What's pictured above was tested on my motorcycles.

View attachment 329472

I will need to know whether your XS650 has a six pin or eight pin connector. The 80/81 bikes are six pin. The 82/83 Heritage Specials are eight pin. I have a limited number of each and I'll pin to order.

I will ship to you for $30.00 if it can get to you in a USPS Flat Rate Box. All others, $20 plus shipping or $20 at my door.

The TCI box is not included. The pictures are to clarify what this harness fits.

View attachment 329473View attachment 329474View attachment 329475
 
View attachment 329471
Since I had a need for these, I made several. This harness will allow you to run a Suzuki GN250 TCI on your 1980 through 1983 XS650. The GN250 box will directly replace the Yamaha XS650 TCI. The TCI box IS NOT INCLUDED. You can buy one here:

CDI Ignitor Box Digital Ignition Fit for Suzuki GN250 Motorcycle


The harness is about ten inches long and the wire colors match the XS650 wiring diagram. The TCI side is a Yazaki locking connector. The motorcycle side is a Sumitomo locking connector. What's pictured above was tested on my motorcycles.

View attachment 329472

I will need to know whether your XS650 has a six pin or eight pin connector. The 80/81 bikes are six pin. The 82/83 Heritage Specials are eight pin. I have a limited number of each and I'll pin to order.

I will ship to you for $30.00 if it can get to you in a USPS Flat Rate Box. All others, $20 plus shipping or $20 at my door.

The TCI box is not included. The pictures are to clarify what this harness fits.

View attachment 329473View attachment 329474View attachment 329475
Has anyone successfully run the CDI linked above? Originally I bought a different GN250 CDI from Amazon and couldn't get any advance when throttling up. So I bought this one, and it works better, but still only gets up to about 4,000 RPM before the engine starts missing again. I assume still not enough advance. 82 Heritage Special.
 
Has anyone successfully run the CDI linked above? Originally I bought a different GN250 CDI from Amazon and couldn't get any advance when throttling up. So I bought this one, and it works better, but still only gets up to about 4,000 RPM before the engine starts missing again. I assume still not enough advance. 82 Heritage Special.
They’re hit or miss from what I’ve heard. If your having advancing issues be sure to double double check all of your wiring. Also, are you running an aftermarket rotor?
 
This specific CDI though? I'm hoping the third one I buy will be my last given that the two I have work differently ;-)

https://www.amazon.com/goodfind68-Compatible-Motorcycle-IGNITER-Assembly
As Phillip pointed out above, they're hit or miss. I've tried about 10 of 'em (I was in the initial group that developed this mod. My bike was the first one to run successfully with the Gonzo box). Of that 10 or so, about half were bad right out of the box. They're cheap Chinese knockoffs... goes with the territory.

I'll add that if you're breaking up above 4k revs, it's not the box. It's been my experience that they either work or they don't... there's no middle ground. Never saw one that misses above 4k.
 
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