I installed a Hayden electric fan (MOSS) during the restoration of my 59 TR-3A - After I installed and got to the point of running the engin, I found it to be a pusher, not a puller - the instructions said to flop the the fan blad and switch the wire connectors - Afte two days of work getting the fan out, modified, per insrtuctions , it still is a pusher, not a puller - I believe it may have something to do with the positive ground - any ideas?