Traxxas T-Maxx 3.3 LONG RPM TELEMETRY SENSOR, TEMPERATURE & VOLTAGE SENSOR
1--The RPM sensor wire has a black square at the end of it and comes with a black plastic mounting bracket. A magnet in the flywheel triggers the sensor. The T-Maxx uses the long version (TRA6520). 1---The 6521 (long) harness uses a simple loop around the head of the engine to read temperature and a jumper wire (red with a shrink wrapped resistor) to complete a voltage sensing circuit.
