Reed 2gTonearm Torn Wire & rewiring HELP please

docfar, That is a fine tonearm. It comes either hard wired or with a 5 pin DIN connector which is round and both channels head into it. It is keyed usually slides into a barrel and there may be a set screw that locks it in.
If it is hard wired you are in trouble unless you are good with a soldering iron. At least the arm wand wiring is OK. You will have to take the junction box apart, cut the last 1/2 inch off the cables, trim them and solder the ends to the terminals inside which you will have to clear first. I would have no trouble doing it but there may be a tech near you also.
If it is a DIN plug you will have to remove the plug from the barrel and buy a new cable. There are a bunch on the market.

Message me docfar

Only a doctor uses the phrase "proximal end". 
I assume he is not a neurologist. A neurologist would figure out the wiring. 

Send your arm to Reed for rewire

I just sent my tonearm to Reed, it is on its way as I type. Contact Ruta at Reed, she can guide you on what to do.

In my case, I bought mine used, and the original dealer no longer sells Reed. The distributor would not handle the repair, so I had to send it directly to Reed. Ruta was helpful as I sorted out how to get my tonearm fixed.

I apparently have a bad solder joint where the clip is joined to one of the cartridge leads. Could have been caused by improper handling when installing a cartridge, or it could have been soldered incorrectly originally. I can’t say which. Should have been an easy repair. A highly qualified technician burned through the wire, three different times on three tries, when he tried to do the repair. The silver wire is very fragile and requires a low soldering temperature and apparently requires very good skill to solder.

Just sharing my experience, your wiring and soldering skills might be different.