Thanks for the info. When I tear a heli down I have always labelled where the leads came from. I'm still fairly new to heli's and it was just a general question. Admiral gave the the generalized answer I was looking for. Thanks to all for your input.
Hi NordCelt, as usual, Admiral came through with a great answer. I have some different helis and they have various layouts for the position of the servos. Most helis have a 120 degree arrangement around the swashplate, but there are other options, too. For example in the 120 degree layout, the Elevator servo can be positioned forward of the swashplate or behind it but always in line with the boom. Aileron and Pitch are left and right of the swashplate and can also be forwards of the swashplate or behind. Always study the heli and its layout before disconnecting wires or removing servos. As murankar suggests, taking photos helps, too. I also used to label up the servos and wires in the beginning but I had long periods between doing anything with the heli, I don't need to do this now. It takes a bit of time but it does stick in the end.
A long while back now, I bought Ray Hostetler's book "Shop and Field Companion", which I still go back to from time to time when I want to delve deeper into theory (or get to sleep LOL). It's a bit heavy for a beginner but is full of good stuff. I've corresponded a couple of times with him and have always benefitted from prompt feedback with sound advice.
Good luck!