Okay. For some time, my cooling system has been fine, but I noticed that my fans to not engage unless acted upon by the AC switch. The relays are fine, as is the ECT. What else am I missing? Anyone have any diagrams?

 

my car was doing the same thing, fans wouldnt work unless the a/c turned on....i jumped the gun a bit and just said F@ck it and ran the fans to a toggle switch, after i did that though i found out the coolant temp sensor was bad.....i thought my guage was fine, maybe running just a tad bit hotter than normal,so i installed a aftermarket temp guage...the gauge showed i was running about 40 degrees hotter than the stock guage showed,replaced the temp sensor and all was good again, took the fans off the toggle...i left the temp guage though just as a back up lol