Crimper - 1028-CT - Don't buy the cheap rubbish in the auto shops.
This will do .100 and .156 - I use it all the time for Bally work.
Crimp contact - 08-52-0113 for thin wires - Buy these for thinner gauge wires
Crimp contact - 08-52-0125 for thick wires - Buy these for power supply etc - I usually just use these.
Housing - CS156-20-LR - and cut to size
Connectors - 26-48-1241 - and cut to size or;
Connectors - 26-48-1245 - With friction lock
Keyplugs - 15-04-0219 - grab a few of these if you plan on replacing the connectors.
Usually - I replace the Crimp contacts AND Connectors - you can reuse the Housing if theay are not damaged.
Hope that helps.