1998 Plymouth Voyager control panel and cooling fan

Great site. I have a 1998 Plymouth Voyager that I recently purchased as a second car. The oil light comes on though there are no level issues and the dinger stays on for approx 4 to 5 minutes, and at the same time the control panel for the blower, a/c, int wipers etc blinks also. While this is going on the blower will not operate for some time but eventually starts. I also found that the cooling fan hot wire came loose and when I reattached it the fan began running after the vehicle had been off for over two hours. Is the relay what controls the cooling fan motor?