Ok heres the problem I have a nelson fan harness on my flexalite fans, well installed the harness and reprogramed my computer myself and now the A/C does not work at all. Can someone tell me what the values are in their system calibration section of their edit program. Everything is hook up right I don't know what to do. There is absolutely no power getting to the compressor. Someone please help me before I pull my hair out!!!!!!!Thanks in advance!!!

 

The green wire you put the "t" tap in goes to the compressor, I'm geussing that you may have cut the wire when you installed the tap. But check fuses first.

 

I checked that once but I will check it again, and I do not see any fuses blown.

 

What year is the truck?
Also, What values are in their system calibration section are you talking about? for the e-fan on off temps?

 

My truck is a 2000, and the values I am talking about are the on-off temps a/c pressures and pretty much all the values in the section.

 

ttt....

 

Thhe fan turn on point cna be set to what every you like, my wife stock 05 fans are set up lilke this.
Fan 1 on temp. 226
Fan 1 off temp. 213

Fan 2 on temp. 235
Fan two off temp. 227
These temps are a bit high, imo. most set the on temp of 190 ish and the off point 8 deg cooler.

You have no power to the compressor clutch right?
There are two fuses and one relay that control the power side (green wire) of the clutch. IGN E fuse which is a 10Amp and the A/C comp fuse which is also 10Amp.
The relay is the A/C comprssore relay.
If you unplug the A/C relay you shoud have two pins with 12 volts.

 

If I unplug the relay I should have two pins with 12 volts when the truck is running or when the truck is off?

 

Oh My God That Ign E Or What Ever It Does, I Just Went And Checked And It Was Blown Bigger Than ****. I Had No Idea That Tied In To The A/c System. You Are The Man.

 

Sweet! glad to hear it was a easy fix!