Post Master General
Join Date: Apr 2012
Location: Bowling Green, VA
I Ride: '09 ZX6R
Best to download the shop manual for your bike, which has all of the wiring schematics in it. Then, you can start sorting out what has been done to that bike's wiring. I'm not convinced the wiring is related to the sensor being out of spec; but it's sure to be causing some other issues.
This is the very reason that buying a bike which is old enough to have passed through multiple owners is so typically an issue. The actual mechanicals are fairly sound -- unless someone gets in there and does something to 'improve' the bike. Electrical issues almost always come about due to owner mods.
Bikes are no where near as hardy as cars, with regard to their electrical systems. There is very little excess power, on a bike designed to be raced. Bigger alternators, heavier wiring, bigger battery..... all of that adds to the weight of the bike which cuts into performance.
Placing greater demands on the charging system will lead to earlier failures in the electrical system. Patching into the harness invites breaks in wiring (opens), corrosion issues, insulation break downs (shorts), etc.
"There's this adage that we have 2 ears and one mouth so we should listen twice as much as we talk. Unfortunately with the Internet people have taken this old adage and turned it around. They have two eyes and 10 fingers so they think they need to post 5 times as much as they read. And since they have 10 fingers and one brain, they only have to think 10% of the time! "