2005 FORD F150--I recently bought a new battery for my F150. I accidentally crossed the positive and negative. I burned a lot of fuses which I replaced. Now, my 4 X 4 does not seemed to work. I took it to the Ford dealer and was told that I needed to replace the PCM which would cost about $ 1,000.00, which I refused. Everything else is working fine but this. I would appreciate any feedback.