fuel tank sending unit ground location on 90 ranger??

[90longbed]

I know on the older rangers (83-88) the ground is on the door side of the steering column screwed in the dash, but where is it on a 90 longbed 2.3 5 speed????just want to check it before I crawl under the truck to find the sending unit.... and does anybody know if i can get to the sending unit to do a few tests without dropping the tank or pulling off the bed????