Help wiring record player

[magicman5]

Hi! 
Today I’ve been trying to fix this old record player, and I was able to get it spinning, but I’m having trouble connecting it to a speaker. It didn’t have a needle, so I put in a cut in half sewing needle, so maybe it’s the wrong size and not working? Anyone know how to connect the speaker? I’m struggling to find where the ground goes. 

[Needfuldoer]

How many pins are there on the back of the cartridge, two, three, or four?

 

 

Do you have a phono preamp to use with it, or a receiver with a phono input? Those things don't put out line level, and there's an equalization curve that has to be applied to correct the sound.