I have a 3050s and mine is under the stove area of the slide. If it isn't on yours then look for removeable panels. Then turn the lights iut so its dark and you'll likely see the glow of the dislay on it.
The control boxes will not be far away because both motors have to plug into it. Follow the wire that comes out of the base of the slide frame on the wall.
As for lubricant, only CRC Power Lube w/PTFE is recommended.
Here is a link to the LCI video on the subject: https://youtu.be/8KbVRFMo1Rg
Ducky Sez; My posts are intended to help with technical and maintenance issues for F/SS only*. I do not measure skin thickness and nice is just another four letter word.