backup light sensor location

Wanting to change my backup light sensor but having a little trouble
finding the exact location?

Also wondering if I would have to reset the cars cpu once i have it installed, or hooked up to the computer at a dealers shop?

Its on the top of the transmisson. I've had trouble with mine and it was due to bad contacts, just a thought. No you don't have to get the comp reset

btw what year? MT? AT? If its manual its a 2 pin connector on TOP of the tranny. I'm not sure about auto.

Its a 2000 with a five speed tranny.

On top of the tranny there is the Tranny fuild cap. Leaning over the drivers side fender which side of of oil cap would it be on?

toward the front of the vehicle