[71blksuper4x4]

I would use a scotch brite pad first to scuff the chrome in those areas that will black again, then wash. Let dry, tack rag it, mask everything off that you want chrome still. Then I would spray some bulldog adhesion promoter to the area of black. Then follow up with a an etch primer, followed by black. If you skip the etch primer, make sure you definitely fog some coats of adhesion promoter before the black. Trevor