Where can I find this solenoid type thing here I don't even know what's it called it operates the ramps on trailer

mobil station near me

Solenoid coil

The picture depicts a coil with a DIN connector. Should be held on by the red cap.
Under the cap will be a cartridge valve screwed into the valve block.
You won't get anywhere without identifying the manufacturer and part number.

The wiring looks hokey going to the coil, I would check that first.

You can take a small screwdriver, nail or something similar and lightly hold it near the coil while you simultaneously active the controls.
It the coil and circuit is working, it should draw the metal piece to it.

There should be a name on the black plastic of the solenoid.

Same type solenoid that’s on lift gates .

You can probably find one at a industrial electrical supply store.

That's a damn good answer. That's how I check solenoid coils

Thanks I got it kinda working, it just won't turn off now 🤣

Yes . All logging equipment has one for every button nowadays .some equipment has up to 15 .we call it electric over hydraulic. All the circuit does is magnetizes the solenoid . First thing we check when something don’t work . Most time it’s just blown fuse. Never heard off solenoid jjst quit when it’s getting fire . Check fuse then see if wired is hot . Sometimes for us the nut is just loose that holds it on but all ours lot bigger an made out of metal with a metal nut .
I would check trailer manufacturer first .