- Sep 9, 2015
- Reaction score
- Ram Year
- HEMI 5.7
3.7l is plug and play. Just plug it into the efan plug from factory.I was asking about the 3.7L V6 fans that are one speed/on or off fans. Not the newer V8 fans that are variable speed fans. I was thinking I could put a one way resistor in the power lines to the efan so that the fan would work "normally" and the temp sensor would provide the power at say 200 down to 190 degrees.
Yet the factory wiring would be protected from power back feed.