[EMSguy4you]

I'm not the guy you want helping you, I don't own a Stratoliner. Hopefully after I sound off, the guy with the real knowledge will show up. But, .....

Based on this diagram:
View attachment 129267

My guess is that your speed sensor is mounted on the what Yamaha calls the Transfer Case, and is sensing that ring of teeth depicted on what Yamaha calls the Middle Driven Shaft.

View attachment 129266


I'd anticipate a fair amount of work getting to that. Good Luck!

REF:

https://www.partzilla.com/catalog/yamaha/motorcycle/2009/stratoliner-xv19ctycs/electrical-1

Yamaha Motorcycle 2009 OEM Parts Diagram for Middle Drive Gear | Partzilla.com

Buy OEM Parts for Yamaha Motorcycle 2009 Middle Drive Gear Diagram

www.partzilla.com

I'm not the guy you want helping you, I don't own a Stratoliner. Hopefully after I sound off, the guy with the real knowledge will show up. But, .....

Based on this diagram:
View attachment 129267

My guess is that your speed sensor is mounted on the what Yamaha calls the Transfer Case, and is sensing that ring of teeth depicted on what Yamaha calls the Middle Driven Shaft.

View attachment 129266


I'd anticipate a fair amount of work getting to that. Good Luck!

REF:

https://www.partzilla.com/catalog/yamaha/motorcycle/2009/stratoliner-xv19ctycs/electrical-1

Yamaha Motorcycle 2009 OEM Parts Diagram for Middle Drive Gear | Partzilla.com

Buy OEM Parts for Yamaha Motorcycle 2009 Middle Drive Gear Diagram

www.partzilla.com

Update 11/15/2023: it’s all a big LIE! The schematics are wrong, it’s all BS! The speed sensor plug is UNDER THE SEAT! There is that bunch of wires/plugs wrapped up in that black wrap with Velcro…in there is the damn plug I needed to access!

LITERALLY a 3 minute install from start to finish 🙄

 

[EMSguy4you]

It's nice that you found the plug, but where is the part you asked about?

The actual speed sensor does snap/plug into the engine case BUT the wiring routes up and into the area under the seat, and thus the speed sensor plug to access is right there.