Moving my electronic antennas?

[Knot-Enuff]

Again, I turn to advice from this group. I am installing an electronic tower on my boat and I not certain if all of the wires will be long enough for the new locations of the antennas. I am refferring to my radar, my satellite and gps. My question is, can I splice the wires to add a little length? Do they sell pigtails for additional length? Should I add length at the antenna or at the display? I'm hoping I can fish enough loose wire, that is existing, but if I cant, what are my options. Thanks again to all and before someone chimes in, yes I know you would probably leave them where they are. Enjoy reading from you all.

 

[Marin]

(Knot-Enuff--- Sent you a Private Message on radar cable length requirements.)