Yes - The exhaust is a much higher temperature. We are running lines dtraight from the muffler to the tank with the tubing included. I would suggest staying away from any inline connecter to change line styles 1) there is no benefit to running the tygon in the muffler pressure position and 2) an inline connector just adds a possible failure point in the future.

Are you hooking the tachometer lead directly into a Spektrum TM1000 telemetry unit in the rpm position? You should have an rpm display on your transmitter if you are. The other two cables from the ignition are to the battery power (the female connector with a red and black wire) and the ignition sensor connector (a male connector with three wires).

Pete