Here's the relay in question. 8-Channel 5V Relay Module for Arduino Raspberry Pi – SainSmart.com I've power, ground, and the voltage to control the 8 relays for a total of 10 pins all lined up in a row. This APPEARS to follow this Molex KK standard, but I'm only guessing. I guess I need to stock up Molex connectors. 
Thanks for the help!
I find having male & female terminated wires come in real handy.
http://www.pololu.com/catalog/product/1800
I bought 50-packs of male-male,male-female, female-female, different lengths,
and housings in various sizes
http://www.pololu.com/catalog/product/1901
to make up different cables.
Yeah, I bought the bullet (and a bunch of jumper wires) last night.
Brandon