I changed my "Temp switch" the 3 wire sender on the head under the thermostat. My guage worked before and the fans worked with the A/C but that was it. After changing this sender I saw no change. My resistor is soldered just fine. I wanted to try temporarily swaping in one of the other relays as they all have the same part number printed on them. But I dont know what they are for and I dont want to cause any more issues. I know where the High Speed fan relay is inder the maxi fuses. LOL its going to be 90 today I need fans.