I bought a 1977 Kawasaki KZ650 and want to run a switch in place of the ignition, because I plan of running a remote start... but I can't figure out what the red and blue wires run too.. I can't afford the owners manual at the moment cause I used my money for the remote start...

I did that. I used the neutral switch wire which is at ground potential when in Neutral, used diodes to isolate starter relay -coil, and Neutral indicator. The positive will come from remote receiver,
This way if you hit the Remote and Bike is in gear. Bike won't fall over.
Also had it so I could "Whistle" and start the bike. This was 30 years ago, something to do.
The way I had it you could turn on switch to allow Remote Start, and if someone tried to steal bike, Engine would die, You have the Ignition Relay-go through Neutral.
To drive bike after remote start, you have to put key in, and Turn On. Putting Bike In gear
Without Key, will kill Bike.