It appears to be a PINK wire.
You can catch on the back of the combination meter at connector D1 pin 17.
Or you can catch it at connector AD3 pin 11 also pink wire
or you can catch it at connector AA2 pin 6 also a pink wire
see attachments for location & removal of combination meter
p.s. joining TS would give you access to all this material and a whole lot more
