My windshield wipers on my 99 GT seem to have a mind of their own. When driving down the road, sometimes my wipers come on without me turning them on. Sometimes they might do 1 cycle, sometimes 2 or 3. Today while using my wipers with the delay on, the delay seemed to change. It would cycle normal then maybe do 2 or 3 cycles in a row then go back to the delay. Any ideas? Is my motor going bad or is it my switch? Any help would be appreciated.