Ac anti diesel relay
 

I am trying to get a factory ac system together....do you need the anti diesel relay? Another new guy question...on electric diagram are they showing the connectors from the front or back ... I think the front...thanks

Re: Ac anti diesel relay
 

When you put the switch on high fan,it actually turns on the anti-dieseling relay,which then sends power to the fan.
Without the relay,you would not have a high fan speed,because the switch isn't strong enough to handle the high amperage.
I don't have a drawing handy.
Mike.:chevy: