how to change the tonearm cable?

I have an old Thorens TD160 with Sumiko MMT arm. I am going fully balanced for vinyl and want to change the tonearm cable to DIN-to-XLR. I am assuming this is simple to do, but I am not very technical and looking for a little info before I take the cover off the bottom of the table. Surprisingly difficult to find a simple "how-to" on this, even on the Thorens sites. Any info would be appreciated. Thanks, Jim