That bloke is cool, we have already exchanged emails but it's the wrong plug
turns out the P58 is made for several different companies but with different plugs on
I'll take another look at nashers one but the adaptor cable is expensive
Is the Raymarine DS600X hd fishfinder really worth it though? it will replace my Gainmin 188c and I will have a Raymarine A70 running a gold card for GPS