Well I just got off the phone with my mechanic (He's actually a jack of all trades) He says that using a solder on a vehicle is bad bad bad. Most applications where crimping is used are applications with multi-directional movement like vibration, the military, race cars, etc. The reason soldering isn't good is because you create a hardened connection at the terminal between the two wires, and hard surfaces transmit vibration which can eventual lead to micro cracks in the solder and failures in the connection.
Bleh.
I'm going down in a bit to return all this **** before I set myself on fire like a **************. And swinging by mechanic for some pointers. Apparently he doesn't want me setting myself on fire like a ************** either.