No reverse lights, not NSS

Checked continuity of NSS and found none. Cleaned it all out and re-checked, had cont. in all positions and reinstalled. Re-checked while in vehicle with shifter in all positions and was good. Still no reverse lights and still starts in all positions. Could not get any power from harness side. Where should I go from here??? Anyone know of any problems with the trans controller or harness between that and the NSS??

94 cherokee sport with AW4, normal wiring.:skull2:

It sounds like the fuse under the dash marked TRANS. I cleaned and reinstalled my NSS and still had no backups. My problem was the fuse.