Pull all the connectors out of the large white connectors and check them against the wiring schematic in the SM(the correct wire in the correct slot), then look at the crimps for proper crimping.Evans quality control is non existent ,I have run into both problems with a hemi harness myself. Also if you have a factory oil pressure gage look in the book for a special resistance wire going from the sending unit to the harness,(only on Rally dash), Evans does not even know those things exist.But you can get one from Frank Baldason ( may not be spelled right).Other than that I can't help.Check everything that you bought from Evans.What I would do is if you find one thing wrong get your money back and buy one from Frank.