A&Q about 350Z
Q:
1972 datson 240z replaced blower motor with older one i smell a funny oder but before could cut off it stopped blowing ,, relaced it with another one now i can not get that one to blow it is a good motor as it was tested... clecked all fuses none was blown.. is there a relay somewhere i should check if so where is it........helpppppppppppp
A:
Comments are from a 73, but I suspect your 72 is similar.
Looking at the FSM wiring diagram for my 73 240Z, it shows a blue wire going to the accessory relay (this relay, I think, is on the passenger side footwell. The relay has three blue wires going to it, and the FSM shows the one for the fan switch as being the middle one.) The FSM wiring diagram, however, shows nothing for the fan motor itself. I recall, when doing mine, that there was a blue wire running from the fan switch which plugged in to a red wire. By the way, I did end up having to replace my fan switch to get the fan blower to work, and if your tested motor works, that may be the problem.
You're kind of on your own here, but I would suggest you switch over to the Tech Forum and try a search. I know I've got a lot of hard copy notes from when I was re-installing my 73 dash after it was out for a year and a half.
Let me know if you don't get it working. I'll email you the notes I've collected on this device.
Good luck!
JR in Tulsa (4EVER Z)
73 240Z - L28, Triple Miks, 5 speed, 3.9.
83 stock 280ZX
Chaos, panic, and disorder---my work here is done!