I "uninstalled" my radar
which was wired from the nav table, through the cockpit and through the SS tubes of the targa. I scratched my head for a while wondering how I was going to get that fat plug (both ends had one) through the conduits. My electrical guy came by and solved the problem for me: he just removed the wires from the plug pins and pulled out the wire. Perhaps you can do the same if the plug at the end can be undone. Just remember to write down the pin schematic (and take photos) so you can put it together the same way after!