Then your switch has been replaced/modified. Take a look at the A/C heating section in the manual, it shows which A/C component gets turned on at the different mode selections. By using symboles such as a dash to show no current and a bolt showing current; in the defrost position the compressor has a dash showing no voltage is sent there. So the cars original came with no A/C in defrost unless it's true about the 83's with the update to run A/C with defrost. I have no facts on this so I'm not sure. I'll be looking into a modification of the switch tomorrow evening, obviously it is possible. -----Dani B. #5003 > Interesting - my AC runs when the defrost is selected, and it has > an early VIN (2135). > > -- > Mike To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/