Old thread, so probably completed by now. If not, a helm switch is a must have for a windlass. Takes all the 'coordination' out of having to go fore or having someone go pull the anchor, while driving forward etc etc. Your windlass manual should have the wiring schematic to add in a remote switch. I recommend soldering your remote wires, coat with dialectic grease and shrink tubing it all, if within your anchor locker. The high humidity and possible line splash may strain the connections down there, and besides; why not go for the absolute best connection right off the bat to ensure flawless operation when most needed. Since a remote switch powers a solenoid, not larger than like 16 gauge 3 wire should be fine for a normal 20 foot run or so.
Prior boat: 1999 Maxum 2400SCR (I loved that boat but the wife made me get bigger). Current: '96 Carver 325 aft cabin.