Computers and modules do not like voltage surges from reverse polarity. In most cases, these are gone and need to be replaced.
The fusible links need to be checked to verify they have not melted away cutting off voltage to the systems.
Even if they are and you replace them, be ready for many other issues in the future as a result of the surge.
I suggest you let a shop hunt this down for you to at least verify no melted harnesses or components.
Tuesday, September 18th, 2012 AT 1:16 AM