http://www.instructables.com/id/ELEV-8/
Step 3:
Once you have all 12 wires heatshrinked, prepare to solder the male bullet connectors. Each of these has small hole in it, which you can use to direct solder right into the
joint. (A pair of helping hands will come in handy here).
Don't be afraid to really fill the connector with solder! After heatshrinking, these connectors should be very secure.
If you've never soldered these before, now would be a great time to check out video number 5 in Hoverfly's tutorial series.
Step 4:
Carefully wrap each boom (the black circular tubes) with the included sticker wraps. Two red and two black!
Once assembled, the 2 red booms should be adjacent to each other, not opposite. This will help keep you oriented during flight.
