There are phono cables on the market similar to http://www.aurealisaudio.com.au/phono-cables/, where you'd use RCA couplers and join ground spades with some clip...
You can also purchase bulk 32awg phono wire and make long tonearm cable using same DIN connector and RCA
You can also purchase bulk 32awg phono wire and make long tonearm cable using same DIN connector and RCA