Blower Switch 73 - 74?

[whitey]

Not sure if this should be here or in Electrical, so I'll put it in both...

Is the blower control switch the same from 73 to 74? I see Rock Auto offers for 74 but not 73 on down. It also looks like there is 4 spade pins on the 73 where my 73 has 3.

Thanks,
Eric