Cool, so red blue pcm = DBC. Green blue pcm = DBW.

I will keep this advise, thanks!

Now can you or someone school me on HO2S variances. Is it just case grounded or not case grounded and wire them accordingly? Are they specific to early( not case grounded) and late( case grounded)? Anything else?

Alt variances?

Thanks a million for your time, I know you are a VERY busy man!