I found this at SME Tonearm Rewiring : SME Tonearms, SME 3009 Turntable Parts Templates & Manuals
It is on the side of the fewer connectors the better. They seem to use Cardas Litz wire and charge GBP-400 for a complete rebuild: The following is from their website:
"There are so called professional / expert SME rewiring services both here in North America & in Europe that will try to sell you on the idea that by pulling a piece of wire through the arm tube & replacing the vintage SME lower four pin horizontal DIN connector with an RCA termination will solve all your problems.
"All we can say to this is, that is nonsense & pure lies.
"This is nothing more than the easy way out, involving the least possible amount of work & the highest possible profit. This is basically a $49.00 rewiring job. Anyone that even knows the most basic amount about electronics & sensitive audio components will clearly tell you that the best type of connection is no connection at all.
"All these alleged professionals are doing for you is swapping one problem for another problem. We on the other hand believe that the correct solution to the problem is the more difficult and time consuming road. No one else in the world employs two independent continuous runs of 4 X 33 fully RF shielded wire further encapsulated in an additional outer fully shielded RF jacket. We actually use almost 10 feet / 3.04 Meters of 4 X 33 to accomplish a 4.25 feet/ 1.25 Meter run of cable.
"Our custom bottom end completely eliminates the original SME bottom end.
With our custom stand off and strain relief system all mess & clutter on the bottom of the tonearm are eliminated. And miracle of miracles, there is no longer a connection point there ...
"By employing the system we have perfected over more than twenty one years, you will achieve far greater sonic improvements than by just pulling a wire through the arm wand , sticking a set of RCA connectors on the bottom of the existing SME screening can and buying a $1,000.00 phono interconnect cable to run from the bottom of the tower to your phono preamp.