Sounds like you are using a JR battery. Red to Red and Brown to Black. The other wire on the batter plug is the "Signal" wire that is there just because it is included on standard JR plugs. The Signal wire from the batter pack is not connected to anything.

I don't run an air filter on my helis, but I do on my planks.

I use dubro fuel filters on the input and output of my fuel can, and between the tank and the carb on the heli. That's it.

No fuel line clamp is necessary UNLESS you are using a "T" fuel filter/connector that has a third nipple that can be used for fuleing. In that case the clamp is needed so that when you fill your tank you don't end up pumping fuel into your engine and flooding it. The easy solution is to just unplug the line running from the tank to the fuel filter between your tank and carb. Unplug the line from the side of the filter closest to the tank. This way, fuel will only flow to your tank when filling and you don't need the clamp.

Hope this helps.