I was actually looking into finding a replacement for the docking connector. Turns out that these connectors are really expensive anyway.

There's one in the RS catalogue which looks like it should work with a little metal work. 447-106 and 447-112. Unfortunately they're also only 24 way connectors. It's £11.51 for the plug and £14.59 for the socket. This means a minimum of £37.61 to replace the socket already on the empeg and for two plugs.

I bought another sled in the end and unscrewed the plug from it. I left all of the wires still attached in case I wanted to use it with the sled again. If you can afford to spend a little more then it's much easier to buy the sled.

- Trevor