Help with tricky IF statement. Somewhat conditional.

You guys have been so helpful, and I sure do appreciate everything you all have done to each me about Excel. Thanks.

The formula in G14 is =B14. There will always be a value in B14. I only want G14 to equal B14 is there is a specific value in F6. If there is not the value that I want in F6, I want G14 to remain blank and not copy the contents of B14 into G14.

For example:
If F6=n12345 then G14 = B14.
If F6=n567AB then G14 = B14.
but,
If F6=n6609K then G14 should not copy B14 and stay blank.
or
If F6=n145AB then G14 should not copy B14 and stay blank.

As a test, I used this formula in G4, but had not luck at all:
=IF(F6="n12345",=B14,"")

There are maybe 5 nXXXXX that I would need this to happen for, so if 1 of these 5 values appear in F6, then I want G14 to equal the contents B14, all the while keeping the formula of G14 equaling B14. If there is is nothing in G14, I want the space to remain completely blank, no "0", no "#N/A", no nothing. As always, thanks in advance guys................

mcr1