Here's some late night reading material that came up after some Googling results- after all, this is probably a Triumph thing, not just the Rocket3...
[URL unfurl="true"]https://www.thetriumphforum.com/threads/tiger-1050-fuel-gauge-clutch-switch.17629/[/URL]
[URL unfurl="true"]https://www.triumphtalk.com/threads/fuel-gauge-reads-empty-fault-cause-asv-c5-clutch-lever.21479/[/URL]
[URL unfurl="true"]https://www.triumphtalk.com/threads/will-not-start-if-fuel-gauge-does-not-register.17859/[/URL]
[URL unfurl="true"]https://www.r3owners.net/threads/no-longer-needed-clutch-switch.37360/[/URL]
[URL unfurl="true"]https://advrider.com/f/threads/triumph-tiger-800-xca-2018-will-not-crank.1355709/[/URL]
"The clutch switch is one of those switches from Triumph that is used to do a whole lot more than just tell the computers that the clutch is either engaged or not. There's about 14 different things on the bike that use info from the clutch switch from fueling to gear position."
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There are two part #s
$161.14 (includes the harness - I think) 2011 Triumph Rocket III Switch Set, LH. Controls, Clutch, Switches, Suspension - T2046759 | HERMYS TRIUMPH eSTORE, Port Clinton PA
$110.72 (requires splicing- I think) 2011 Triumph Rocket III Switch Set, LH. Suspension, Controls, Clutch - T2046018 | HERMYS TRIUMPH eSTORE, Port Clinton PA
I remember when mine was apart a small "shaft" that seemed worn down. I'm wondering if I can replace that with something else to get the existing switch going again. Thinking maybe as it is now the ECU sees that the clutch lever is in and starts, but does not see that it is out, or something like that- I'm totally making this stuff up 
I just ordered one from Pinwall for $55. We'll know soon enough if that is the fix.
