2005 matrix remote start wiring

I plan to install a Compustar remote start w/o alarm on a 2005 Toyota Matrix XR with manual transmission, but have several questions regarding the wiring. First, the wiring diagram posted on the12volt states that the constant +12V at the ignition harness is the white (25A) and black (15A) wires. My Compustar has one red +12 wire--is it best to connect to the white or black wire in the ignition harness? The Bulldog T-harness uses the black wire, but I can change this to the white wire if this is better. Second, the Compustar install manual does not indicate a clutch bypass/detection wire--is this necessary for the Matrix, or do I not need to worry about the clutch switch for the remote start? Thank you, Ryan

Thank you advanced, Do you know what type of signal (+ or -) is required at the clutch switch, or if this is the correct procedure to bypass the clutch?

Please disregard my last post about the clutch bypass--I later found instructions to wire a relay to the clutch switch wires, activated by the 2nd starter wire. I have one more question regarding the Compustar, and then i should be ready for the install: The compustar provides both + and - door trigger inputs, and the Matrix has a - door trigger wire. I realize that the brain must know when the door is opened in order to activate "reservation mode" which allows clutch bypass. The install manual is a bit vague regarding the wiring however, and shows a bracket around both + and - door trigger connections and states that this connection is required for manual transmission installs. Does anyone know if this requirement refers to both + and -, or only one of the two connections? From the reviews, the compustar appears to be a great unit--I wish the install manual were as good!