Door switch with wired external magnet contacts for metal mailbox

I’m sure it has been discussed before but I can’t find what I’m looking for. I want use a length of wire to run from a magnet contact for my metal mailbox to the house side of my mailbox where I’m going to put the circuit board / battery in a piece of PVC protected from the elements. I tested a switch from my mailbox and it works, but not inside the metal cabinet so I need to mount it on the back of the mailbox in something weather resistant like PVC.

I don’t have the soldering ability to add the extension wires to what I have so I need something else. I can solder but not those to those tiny contacts on the tiny circuit board.

Thanks for any recommendations on a switch with remote magnets. Links appreciated.

Maybe this will help.