Everything should be labeled on the back.
C band LNB connects to C/H
Ku band LNB connects to K/V
Video and R/L Audio RCA jacks connect to your TV or VCR (optional)
+5V, PULSE and GND connect to servo motor (in feedhorn) as follows: red to +5 volts, white to pulse, black to ground (GND).
PULSE and GND also are connected to the two sensor wires on actuator arm (these are usually a noticeably smaller gauge wire).
M1 and M2 are connected to motor wires on actuator arm (usually a larger gauge wire than the sensor wires). MAKE SURE YOU DON'T MIX UP THE MOTOR AND SENSOR WIRES! If the motor turns the dish the wrong way (moves it west when you punch east), reverse the connections to M1 and M2 (move the wire from M1 to M2, and the other wire from M2 to M1).
(One of the two +5v connections, the C/Ku connection, and the V/H connection are normally not used in a typical system with a reed sensor in the actuator arm).
VHF OUT TO TV may be used to feed an RF signal to a TV.
VHF IN FROM ANT may be used as a connection to a TV antenna, cable TV feed, or to the output of another (possibly digital) receiver. In this case, when the satellite receiver is turned off or the remote is used to select that input, the VHF IN will be looped through to the VHF OUT, thus you can select between antenna and satellite dish (for example). This works well for feeding a set in another room.
Limitations: The VHF OUT is mono only. If you need stereo sound, use the video and R/L audio (possibly fed into a stereo modulator if you want to feed a whole house system). HOWEVER, note that the 450i is incapable of providing stereo sound on unscrambled analog channels. It WILL provide stereo sound on any Digicipher 2 signal that you have authorization to receive (including any you may find in "free" fixed-key mode), provided of course that your receiver has the Digicipher descrambler card. You MIGHT be able to coax stereo sound out of an unscrambled analog feed if you have one of the old external stereo processor units (which would connect to the BASEBAND jack, I believe) but I haven't personally tried this, and since analog is going away I wouldn't invest much time or effort into trying to accomplish that.
Note that you will have to get the big dish to track the arc. That is much harder to explain (in text) than to actually do. I really hope you know how to do that, or know someone who knows how.
