I can’t seem to find some place to find an anderson connector. THe red connector thingy that goes onto the battery (connect thingy). i want the power cord with it too :-D. if you help me, thank you 
I don’t think you can buy it with the wire already crimped in, but you can buy the contact/housing package here www.powerwerx.com (50 Amp SB Series) and solder in new wire (there is some in the kit).
Don’t just solder the wire into the connector, make sure you use a crimper meant for 6 gage lugs. I think actually there might be specific crimper’s for those connectors. The reason why you don’t want to just solder wires in is most solders are meant to melt at low temperatures and those temperatures can easily be reached with high current draws from motors like the Atwood/cim. If the solder melts theres a chance that it can bridge across the internal lugs and create a dead short.
Yes there is a special crimper for those and no it is not cheap. That is why we solder, but with a torch, not an iron. It works superbly if done right (right=not burning contact). Also, to clear some things up, current itself does not cause heat. Resistance does. I doubt the resistance in this large soldered connection would cause enough heat to even soften the solder. I think if you are melting solder joints, then you need not a crimping tool, but a more skilled individual behind the soldering tool. But perhaps Al will stumble along this thread and prove this one way or another.
The contacts powerwerx sells does not require a special crimper, it is not the same roll crimped connector that comes with the kit andersons. You can crimp it with the old kit crimper fine, although we do solder ours as well (we have a iron that can easially solder them). I would recommend against only soldering the connectors without crimping them first.
Grainger if nearby usually has the 50 amp connector in stock. They do not sell one with cables connected to it but as mentioned above you could easily attach your own. I would more suggest a combination of both. First crimp then solder. The crimp will give a good physical contact and will hold the wire, the solder will give a good electrical contact.
-Mike
If you visit the Powerwerx site and search around you will find a variety of documents on the this family of connectors and you will see that there are two types of connctors (high detent and normal) and two types of crimp for each. Choose Wisely. The one style is easily crimped with standard crimpers.
Remember that a good soldered connection is one that is mechanically sound to begin with. A poorly made connection, even one that is soldered has the potential for high resistance (relatively speaking) which means heat. I have seen these contacts get hot enough to melt the plastic holding the contacts in place. This is a domino effect which can only increase the resistance and heat over a short time and yes it might get hot enough to melt solder. Most electronic solder alloys will melt at just over 400 degrees.