Hello,
Yep, you must connect the 30 and 87 terminals of the fan relay. here is a wiring diagrams so you can see how the system works and where the relay is in the diagrams below:
https://www.2carpros.com/articles/replace-electric-fan-motor
Check out the diagrams (below). Please let us know if you need anything else to get the problem fixed.
Images (Click to enlarge)
Sep 25, 2019 at 12:57 PM