Switch Came Without Any Instructions or Labeling. Anyone Know?

[Last Frontier Wrangler]

Sorry if this is obvious and Im just not finding the answer out there, but electrical is definitely my weakest area. Recently bought some rocker switches off Amazon, and they surprised me by coming direct from the factory in China (Mandarin writing on the packages, customs stamps and all). There's no instruction on wiring, and no numbering on the posts. Anyone know how this should be wired, in terms of where the load, ground, and lighting power supply should connect?
Thanks for the help.

 

[UK4X4]

If there's no dwg on Amazon, then ask a question to the supplier

or with a multimeter is relatively easy to work out the pin out...

resistance or diode mode

contact will make / brake on each operation , zero /Over range

the lamp would show a resistance across its two contacts

 

[ryan212]

Interesting carling Contura 2 knock off with different pinout.

 

[verdesardog]

Probably one set of contacts for the illumination and one set for the actual switch. You need to check out the terminals with a meter. Or just send it back for a refund. There is absolutely no way anyone can say what terminals are for what by looking at that photo.