A soldering iron also works if you don't want to get a soldering gun.
Also helpful:
Flux (if you didn't happen to buy rosin core solder)
Heat shrink + lighter or heat gun
Dean's connectors (While you're already soldering, why not?)
Splices (if you aren't so great at soldering)
and... If you don't know what AWG wiring is... it's the kind that is stranded... that's actually quite important (especially if you're doing a crane stock)... as it's more flexible and has a larger amperage rating, as well as slightly improved flow characteristics over solid wiring.
