Ammo Box Adapter Receptacle question

[Flatlander]

I'm making an ammo box adaptor for my civilian trailer. I haven't taken apart one of these receptacles before, so I'm not sure how to attach the wires to the receptacle. Are they typically soldered to the posts in the picture?

 

[jbayer]

Yes, those are solder cups.

 

[Flatlander]

Perfect! That's just the picture I needed. Thank you!