Jim, to cut the connectors and replace with the old ones for the fans is not a very good idea, even you did it good. would it not have been possible to remove the complete old wire with the connector from the old motor and replace this wire to the new motor? that is why I asked how you say to a 1/4 bolt with 1/2 head. and this Jim explained as 1/2 bolt. but now the question to the technicians here: how do you say to a 1/4 bolt with a (only for example ) 1/2 head?. we in europe say to a 8 mm nut with a 13 mm head it is a 8 mm nut.