reverse on my 4 speed transmission

I am trying to set up my reverse lights the way they are supposed to be. Right now there are fog lights on a toggle switch. The reason why is the guy went from a 3 speed on the column to a 4 speed on the floor. I can't find a reverse hook up or switch anywhere on the transmission. Maybe it is gone and the hole plugged? The numbers I got off the case are : GM 591568 and E170. Any help would be greatly appreciated.

Scott

No ideas? Anybody???

best I can remember there is no place on gm trans for back-up lights. they were made into the shift column or on the shifter bracket. been awhile sense I messed with a straight shift but I believe you gonna have to do a little fabricating. :HMMM:

I appreciate the response.

Scott