ok, that NAPA search engine is really goofy; I got over 15 pages of hits on it with a search for 78 bronco... blower motor resistor yesterday using the Link I posted...now I tried that Link again just now and got the "We're sorry, but no matching products were found for "78 bronco blower motor resistor"."///!
Then I used an old part number to get to it again now using Google.. ECHLIN BR93
that is an ECHLIN pn by NAPA
it has a diff male blade config tho;
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Blower Motor Resistor
Product Line: Echlin Ignition ECH BR286
Blower Motor Resistor
Product Line: Echlin Ignition ECH BR193
Image Not Available
Blower Motor Resistor
Product Line: Echlin Ignition ECH BR464
Blower Motor Resistor
Product Line: Echlin Ignition ECH BR159
Blower Motor Resistor
Product Line: Echlin Ignition ECH BR80
Blower Motor Resistor
Product Line: Echlin Ignition ECH BR89
Blower Motor Resistor
Product Line: Echlin Ignition ECH BR338
Blower Motor Resistor
Product Line: Echlin Ignition ECH BR371
Blower Motor Resistor
Product Line: Echlin Ignition ECH BR259
Blower Motor Resistor
Product Line: Echlin Ignition ECH BR328
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Why not take it to a local NAPA, Advance Auto..etc and have em match it up?