Rick:
Black, brown are batt. negative. Red is batt. positive and white, orange are signal wire. Can't hurt anything if you plug them in backwards, just won't work. Plug them in with the same colour match direction as your regular servos. I use the same servos in a TM 400. Great trouble free servos and great flying plane. Beefed the plane up a bit as I put it through the mill. I braced up the landing gear as it pulled out on the first landing. If you can find a picture on the net of the real one, you will see that there are two more struts on the front of the undercarriage. I added those two and had no problems since.