Ok...I've started the Total Fan Control set up. I'm starting with the Hayden 185 temp switch, it's all hooked up to a switch. The only thing left to complete the first switch is to splice into the relay from the switch. There are three relays above the power booster. I want to be sure I am tapping into the correct relay for the primary fan. One of the relays has a black/white wire. Is this the fuel pump relay? Another one has a red/black wire, green/white, a brown one, and orange one. Is that the primary? And the third has a black/pink wire, is this the secondary? All three relays have an orange wire, with the exception that one wire is thinner than the other two. I really appreciate the help.

Thanks.

 

I assume your working on your 91 with the 730 ecm. If so the wiring diagrams below should tell you what you need to know.

 

thanks for the help, I wasn't able to open the file but never the less, I managed to hook up the primary fan and lcd correctly. thanks again for the help.

 

Dang, i guess i should have tried the file after i uploaded it. Anyway if anyone is interested in seeing the files just right click the picture below and save it to your harddrive and use windows preview program to enlarge it.

http://