How to install blower motor relays??

Sorry to dig up an old thread. Just thought I add some info.
Just doing research in to updating my 65 coronet and 66 valiant blower motor with a relay. On another site it recommended using a single five pin relay right before the motor. This allows the switch and resistor like normal until HI speed is engaged then the relay supply's direct power to the motor. Blower motor wiring diagrams


The 1962 Master tech service book session 174 Air- Conditioned car comfort. Has a diagram that shows a relay for the compressor clutch.


I am gonna hope to get this added to my mopar to keep them working care free for years to come.