help finding backup light switch wiring

hello,
I have converted my 94 1.8L eclipse to electric. in doing so, I cannot find where the reverse indicator wiring is.

its the wiring for the following plug:

http://www.gecko-ak.org/Talon/images/Clutch/TransaxleOverviewDetail.jpg

could someone check their car and see where the wire that plugs in the transmission (manual) originates from?

many many thanks if anyone can help