Steveocee

yea safest is to do 1 wire at a time leaving the other in the old connector until you have soldered and wrapped the new one also helps not get confused which wire goes to what.

I guarantee I'll get one of the plugs polarity backwards and have to resolder lol

Dont have the soldering iron contact the deans connector for too long..or the plastic will melt. (Ruined x2 by applying to much heat) But it's pretty easy to do the mod.     Make sure you cut only one battery lead at a time and solder it to the deans plug..then the other lead.  Cutting both can cause lipo to ummm get a little excited and explode apparently. (So i've been told)   Here's a good video...