anyone good with modifying transducer wires?

I want to use my quick release on my terrova as well as take my 788 from th boat. The way the cable collector is I will have to leave my bottom half on the boat for the power cable. I was thinking about buying a 10ft transducer extension cable and having it cut down to a foot or two so I can quickly seperate the two. I dont feel comfortable doing this mycelf though and not messing something. Can anyone do this for me? I will order the cable and have it shipped to your house, also will pay for shipping and anything that is needed. Please let me know

Josh