Anyone have a low alky sensor go bad? PAC

[GBGN1]

Got my alky control unit all installed but I can not get ground to the tan wire . I popped the switch out of the tank and I'm testing it with my fluke. I've got good ground on black wire but still no good. The light for the low alky comes on every time when I ground it, so it isn't the light.
Is there a new switch available?
Thanks

 

[Razor]

The sensors only go bad when power hits the tan wire when no fluid is in the tank