safc and wide band help?

[4seasons69]

ok so the rpm display on my safc doesn't work. it hasn't worked since I installed it. ive double checked it a couple times and i'm pretty sure I have it wired in right. i'm wondering if this could have an affect on how the safc will work?

as for the wideband I wired it in and it works but now I have a check engine light on.

so I'm wondering if someone can help me a little bit. any suggestions will be greatly appreciated. thanks