Sparks wrote:
What is the best way of attaching another cable?

Any advice or suggestions gratefully received.



http://www.kneesnet.com/acatalog/Kneesnet_Online_13
_Amp_Flex_Connector_355.html

http://tinyurl.com/apxdw


I am after a waterproof (immersible) version of this.
Any ideas?

How about:
http://www.tlc-direct.co.uk/Products/BRH65Z.html

It's IP68 which means submersible for long periods under pressure AIUI

David