It was raining yesterday and I pushed the lever over to VENT and the other one on COOL>... Fan did not come on and the air coming out was Warm to Hot. I switched to DEF and the air was cool and the fan ran. I am guessing the vent was not opening to the outside???? There is a purple wire under the panel that is not attached to anything. Also, my baby is an 88 YJ. Thanks for any advice and keep in mind that I am new to the whole jeep thing so keep it simple.