199? 240sx automatic transmission

[dccse3k]

Okay, so i bought a used transmission from a guy and I need some help with a hole.

Someone stole my old one i had laying out in my yard so i have nothing to compare it to. It is a hole next to where the driveshaft slips in the transmission and it is on the left side i believe. I can see the gears from it and its about the size of a quarter.

My 240 had electronic speedometer but i think this hole might be for a speedometer cable. Does anyone know if that is what it is and then I should just be able to plug the hole w/ something?

[jetroy240]

That is where the speed sensor is bolted on w/ 6 mm bolt