Yep, as said above use the same values and quality components. I like path resistors. hook the ground wire to your black terminal. I used Mundorf in my crossover and it got expensive. but with only one cap go for a good one, silver, gold oil.
I’d probably leave the fuse out (just replace with straight wire) has it ever blown? I think a lot of people take the fuse out of their Magnapans but I’ve never owned a pair so I’m not sure.
And I’d rewire. I used Duelund tinned copper cotton with excellent results.
Jerry
Edit to add: since you only have one capacitor, it probably feeds the bass. but if it does feed the mids or highs, add a duelund bypass cap, .1mF in paralle. It will cost $50 to $100 per channel. If it is in the bass feed, then don't bother.