[MrFixr55]

OK, 1st cartridge pictured is the replacement Astatic ceramic unit? The 2nd one pictured looks like a variable reluctance unit. That one would require a matching transformer (likely a step up one at that. Unfortunately, that one looks a little gnarley.

Connect the black and shield to the body of the RCA, connect the red wire to the pin. Ensure that the shield is grounded only at one end. Hopefully, that will solve the hum. Consider replacing the lead wire with one with outside insulation. This is a transformer powered set. Make sure that the turntable is grounded to the chassis through another wire, not one carrying or shielding the signal.

When mounting the cartridge try to match the geometry of the original cartridge, both in how far the cartridge protrudes from the tone arm and location of the needle in the shell relative to the original needle. It appears that you used pieces of metal. This may provide too much stylus pressure on the record. Getting this to track between 2 - 5 gram tracking pressure would be ideal, but try to get it under 10 gram.

Hope that helps.