i just bought a autometer exhaust temp gauge autometer # 5765 and i bought the probe for the gauge probe #5244 competition series kit...... I was wondering is this all i need to hookup the gauge. Because when i read the instructions and ask my mechanic he said that a temp pyrometer module should have came with the kit and that i need one.... Is this true? Do i really need one and also does it supposed to come with the probe?