I just connected a new Hayward Tristar 2 speed energy efficient 1.5 HP pump replacing a 20 year old 1.5 HP pump that ceased over the winter. I can't get my eyes in a position to read the wiring diagram on the pump housing so I can't read the letters associated with each of the connectors, but I connected the neutral to the connector that would stay the same irrespective of which the hot wire connects to. I then connected the hot wire to high speed connector ( I know now that I need to run a third wire and connect a switch that will allow me to choose high or low speed operation). The pump runs and primes in a couple of minutes- the moment the pump filter basket finally fully primes the pumps cycles to low speed, about a minute later it will increase to high speed then almost immediately cycle back to low speed. After about 5 or so of these cycles the electric motor becomes quite hot to touch. I have shut it off as I am concerned that this just isn't right. Hoping someone can help. Thanks.