Ok, let me be sure I'm thinking correctly. I will need the following:Generally, you just need cable and connectors to install the adapter boards. You can use pretty much anything you want to accomplish this, but I like the 3 pin mini-xlr connectors. Aviation connectors also seem pretty popular (and might be a little easier to solder). Then you need some cable. I used alarm cable and just used 3 of the conductors.
I also used m3 standoffs to mount the board in the light.
Hopefully this is helpful, but I'm happy to help if you have other questions.
(3) adapter boards (one for each light)
(3) 3 pin connectors
Alarm cable
M3 standoffs
Am I missing anything else?