OP
@winterneuro avatar
UTC

Enthusiast
2014 Vespa 300 GTS Super
Joined: UTC
Posts: 71
Location: Buckhannon, WV
 
Enthusiast
@winterneuro avatar
2014 Vespa 300 GTS Super
Joined: UTC
Posts: 71
Location: Buckhannon, WV
UTC quote
Hello. I've found others with this issue in the past, but folks didn't come back and actually post their solution!

I'm having the issue with my GTS 2013 where the coolant and fuel gauges are max'd, and some of hte lights are not working properly on the odometer assembly. So I know I have a ground fault somewhere leading to this system.

I cannot find advice or a video that will help me understand exactly how to check for this. I'm very confused when I try to read the electrical wiring map in the service manual.

If someone can provide tips (with specific steps/wires/sections to check) I'd be grateful.
@jimc avatar
UTC

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 44691
Location: Pleasant Hill, CA
 
Moderaptor
@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 44691
Location: Pleasant Hill, CA
UTC quote
Use the actual circuit diagram, not the crappy ones in the service manual:

https://manuals.wotmeworry.org.uk/Vespa/GTS300%20Super/

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